gochem/resources/periodictable.csv
chemistry-software 0841f1190b SDF molfile parser
2024-09-26 13:50:26 +02:00

130 KiB
Raw Blame History

1nameappearanceatomic_massboilcategorydensitydiscovered_bymeltmolar_heatnamed_bynumberperiodgroupphasesourcebohr_model_imagebohr_model_3dspectral_imgsummarysymbolxposyposwxposwyposshellselectron_configurationelectron_configuration_semanticelectron_affinityelectronegativity_paulingionization_energiescpk-hexblockimage.titleimage.urlimage.attribution
2Hydrogencolorless gas1.00820.271diatomic nonmetal0.08988Henry Cavendish13.9928.836Antoine Lavoisier111Gashttps://en.wikipedia.org/wiki/Hydrogenhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_001_hydrogen/element_001_hydrogen_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_001_hydrogen/element_001_hydrogen.glbhttps://en.wikipedia.org/wiki/File:Hydrogen_Spectra.jpgHydrogen is a chemical element with chemical symbol H and atomic number 1. With an atomic weight of 1.00794 u, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass.H1111[1]1s11s172.7692.2[1312]ffffffsVial of glowing ultrapure hydrogen, H2. Original size in cm: 1 x 5https://upload.wikimedia.org/wikipedia/commons/d/d9/Hydrogenglow.jpgUser:Jurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/hydrogen.php
3Heliumcolorless gas, exhibiting a red-orange glow when placed in a high-voltage electric field4.00260224.222noble gas0.1786Pierre Janssen0.952118Gashttps://en.wikipedia.org/wiki/Heliumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_002_helium/element_002_helium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_002_helium/element_002_helium.glbhttps://en.wikipedia.org/wiki/File:Helium_spectrum.jpgHelium is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table. Its boiling and melting points are the lowest among all the elements.He181321[2]1s21s2-48.0[2372.3, 5250.5]d9ffffsVial of glowing ultrapure helium. Original size in cm: 1 x 5https://upload.wikimedia.org/wikipedia/commons/0/00/Helium-glow.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/helium.php
4Lithiumsilvery-white6.941603.0alkali metal0.534Johan August Arfwedson453.6524.86321Solidhttps://en.wikipedia.org/wiki/Lithiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_003_lithium/element_003_lithium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_003_lithium/element_003_lithium.glbLithium (from Greek:λίθος lithos, "stone") is a chemical element with the symbol Li and atomic number 3. It is a soft, silver-white metal belonging to the alkali metal group of chemical elements. Under standard conditions it is the lightest metal and the least dense solid element.Li1212[2, 1]1s2 2s1[He] 2s159.63260.98[520.2, 7298.1, 11815]cc80ffs0.5 Grams Lithium under Argon. Original size of the largest piece in cm: 0.3 x 4https://upload.wikimedia.org/wikipedia/commons/e/e2/0.5_grams_lithium_under_argon.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/lithium.php
5Berylliumwhite-gray metallic9.012183152742.0alkaline earth metal1.85Louis Nicolas Vauquelin1560.016.443422Solidhttps://en.wikipedia.org/wiki/Berylliumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_004_beryllium/element_004_beryllium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_004_beryllium/element_004_beryllium.glbBeryllium is a chemical element with symbol Be and atomic number 4. It is created through stellar nucleosynthesis and is a relatively rare element in the universe. It is a divalent element which occurs naturally only in combination with other elements in minerals.Be2222[2, 2]1s2 2s2[He] 2s2-48.01.57[899.5, 1757.1, 14848.7, 21006.6]c2ff00sPure Beryllium bead, 2.5 grams. Original size in cm: 1 x 1.5https://upload.wikimedia.org/wikipedia/commons/e/e2/Beryllium_%28Be%29.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/beryllium.php
6Boronblack-brown10.814200.0metalloid2.08Joseph Louis Gay-Lussac2349.011.0875213Solidhttps://en.wikipedia.org/wiki/Boronhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_005_boron/element_005_boron_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_005_boron/element_005_boron.glbBoron is a metalloid chemical element with symbol B and atomic number 5. Produced entirely by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it is a low-abundance element in both the Solar system and the Earth's crust. Boron is concentrated on Earth by the water-solubility of its more common naturally occurring compounds, the borate minerals.B132272[2, 3]1s2 2s2 2p1[He] 2s2 2p126.9892.04[800.6, 2427.1, 3659.7, 25025.8, 32826.7]ffb5b5pPure Crystalline Boron, front and back side. Original size in cm: 2 x 3https://upload.wikimedia.org/wikipedia/commons/a/a2/Boron.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/boron.php
7Carbon12.011polyatomic nonmetal1.821Ancient Egypt8.5176214Solidhttps://en.wikipedia.org/wiki/Carbonhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_006_carbon/element_006_carbon_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_006_carbon/element_006_carbon.glbhttps://en.wikipedia.org/wiki/File:Carbon_Spectra.jpgCarbon (from Latin:carbo "coal") is a chemical element with symbol C and atomic number 6. On the periodic table, it is the first (row 2) of six elements in column (group) 14, which have in common the composition of their outer electron shell. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds.C142282[2, 4]1s2 2s2 2p2[He] 2s2 2p2121.77632.55[1086.5, 2352.6, 4620.5, 6222.7, 37831, 47277]909090pElement 6 - Carbonhttps://upload.wikimedia.org/wikipedia/commons/6/68/Pure_Carbon.pngTexas Lane, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons
8Nitrogencolorless gas, liquid or solid14.00777.355diatomic nonmetal1.251Daniel Rutherford63.15Jean-Antoine Chaptal7215Gashttps://en.wikipedia.org/wiki/Nitrogenhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_007_nitrogen/element_007_nitrogen_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_007_nitrogen/element_007_nitrogen.glbhttps://en.wikipedia.org/wiki/File:Nitrogen_Spectra.jpgNitrogen is a chemical element with symbol N and atomic number 7. It is the lightest pnictogen and at room temperature, it is a transparent, odorless diatomic gas. Nitrogen is a common element in the universe, estimated at about seventh in total abundance in the Milky Way and the Solar System.N152292[2, 5]1s2 2s2 2p3[He] 2s2 2p3-6.83.04[1402.3, 2856, 4578.1, 7475, 9444.9, 53266.6, 64360]3050f8pVial of Glowing Ultrapure Nitrogen, N2. Original size in cm: 1 x 5https://upload.wikimedia.org/wikipedia/commons/2/2d/Nitrogen-glow.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/nitrogen.php
9Oxygen15.99990.188diatomic nonmetal1.429Carl Wilhelm Scheele54.36Antoine Lavoisier8216Gashttps://en.wikipedia.org/wiki/Oxygenhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_008_oxygen/element_008_oxygen_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_008_oxygen/element_008_oxygen.glbhttps://en.wikipedia.org/wiki/File:Oxygen_spectre.jpgOxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table and is a highly reactive nonmetal and oxidizing agent that readily forms compounds (notably oxides) with most elements. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium.O162302[2, 6]1s2 2s2 2p4[He] 2s2 2p4140.9763.44[1313.9, 3388.3, 5300.5, 7469.2, 10989.5, 13326.5, 71330, 84078]ff0d0dpLiquid Oxygen in a Beakerhttps://upload.wikimedia.org/wikipedia/commons/a/a0/Liquid_oxygen_in_a_beaker_%28cropped_and_retouched%29.jpgStaff Sgt. Nika Glover, U.S. Air Force, Public domain, via Wikimedia Commons
10Fluorine18.998403163685.03diatomic nonmetal1.696André-Marie Ampère53.48Humphry Davy9217Gashttps://en.wikipedia.org/wiki/Fluorinehttps://storage.googleapis.com/search-ar-edu/periodic-table/element_009_fluorine/element_009_fluorine_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_009_fluorine/element_009_fluorine.glbFluorine is a chemical element with symbol F and atomic number 9. It is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. As the most electronegative element, it is extremely reactive:almost all other elements, including some noble gases, form compounds with fluorine.F172312[2, 7]1s2 2s2 2p5[He] 2s2 2p5328.16493.98[1681, 3374.2, 6050.4, 8407.7, 11022.7, 15164.1, 17868, 92038.1, 106434.3]90e050pLiquid Fluorine at -196°Chttps://upload.wikimedia.org/wikipedia/commons/2/2c/Fluoro_liquido_a_-196%C2%B0C_1.jpgFulvio314, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons
11Neoncolorless gas exhibiting an orange-red glow when placed in a high voltage electric field20.1797627.104noble gas0.9002Morris Travers24.5610218Gashttps://en.wikipedia.org/wiki/Neonhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_010_neon/element_010_neon_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_010_neon/element_010_neon.glbhttps://en.wikipedia.org/wiki/File:Neon_spectra.jpgNeon is a chemical element with symbol Ne and atomic number 10. It is in group 18 (noble gases) of the periodic table. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.Ne182322[2, 8]1s2 2s2 2p6[He] 2s2 2p6-116.0[2080.7, 3952.3, 6122, 9371, 12177, 15238, 19999, 23069.5, 115379.5, 131432]b3e3f5pVial of Glowing Ultrapure neon. Original size in cm: 1 x 5https://upload.wikimedia.org/wikipedia/commons/f/f8/Neon-glow.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/neon.php
12Sodiumsilvery white metallic22.9897692821156.09alkali metal0.968Humphry Davy370.94428.231131Solidhttps://en.wikipedia.org/wiki/Sodiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_011_sodium/element_011_sodium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_011_sodium/element_011_sodium.glbhttps://en.wikipedia.org/wiki/File:Sodium_Spectra.jpgSodium /ˈsoʊdiəm/ is a chemical element with symbol Na (from Ancient Greek Νάτριο) and atomic number 11. It is a soft, silver-white, highly reactive metal. In the Periodic table it is in column 1 (alkali metals), and shares with the other six elements in that column that it has a single electron in its outer shell, which it readily donates, creating a positively charged atom - a cation.Na1313[2, 8, 1]1s2 2s2 2p6 3s1[Ne] 3s152.8670.93[495.8, 4562, 6910.3, 9543, 13354, 16613, 20117, 25496, 28932, 141362, 159076]ab5cf2sNa (Sodium) Metalhttps://upload.wikimedia.org/wikipedia/commons/2/27/Na_%28Sodium%29.jpgThe original uploader was Dnn87 at English Wikipedia., CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons
13Magnesiumshiny grey solid24.3051363.0alkaline earth metal1.738Joseph Black923.024.8691232Solidhttps://en.wikipedia.org/wiki/Magnesiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_012_magnesium/element_012_magnesium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_012_magnesium/element_012_magnesium.glbhttps://en.wikipedia.org/wiki/File:Magnesium_Spectra.jpgMagnesium is a chemical element with symbol Mg and atomic number 12. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (Group 2, or alkaline earth metals) of the periodic table:they each have the same electron configuration in their outer electron shell producing a similar crystal structure. Magnesium is the ninth most abundant element in the universe.Mg2323[2, 8, 2]1s2 2s2 2p6 3s2[Ne] 3s2-40.01.31[737.7, 1450.7, 7732.7, 10542.5, 13630, 18020, 21711, 25661, 31653, 35458, 169988, 189368]8aff00sMagnesium crystalshttps://upload.wikimedia.org/wikipedia/commons/3/3f/Magnesium_crystals.jpgWarut Roonguthai, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons
14Aluminiumsilvery gray metallic26.981538572743.0post-transition metal2.7933.4724.2Humphry Davy13313Solidhttps://en.wikipedia.org/wiki/Aluminiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_013_aluminum/element_013_aluminum_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_013_aluminum/element_013_aluminum.glbAluminium (or aluminum; see different endings) is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal. Aluminium is the third most abundant element (after oxygen and silicon), and the most abundant metal, in the Earth's crust.Al133273[2, 8, 3]1s2 2s2 2p6 3s2 3p1[Ne] 3s2 3p141.7621.61[577.5, 1816.7, 2744.8, 11577, 14842, 18379, 23326, 27465, 31853, 38473, 42647, 201266, 222316]bfa6a6pPure aluminium foil. Original size in cm: 5 x 5https://upload.wikimedia.org/wikipedia/commons/3/3e/Aluminium.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/aluminium.php
15Siliconcrystalline, reflective with bluish-tinged faces28.0853538.0metalloid2.329Jöns Jacob Berzelius1687.019.789Thomas Thomson (chemist)14314Solidhttps://en.wikipedia.org/wiki/Siliconhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_014_silicon/element_014_silicon_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_014_silicon/element_014_silicon.glbhttps://en.wikipedia.org/wiki/File:Silicon_Spectra.jpgSilicon is a chemical element with symbol Si and atomic number 14. It is a tetravalent metalloid, more reactive than germanium, the metalloid directly below it in the table. Controversy about silicon's character dates to its discovery.Si143283[2, 8, 4]1s2 2s2 2p6 3s2 3p2[Ne] 3s2 3p2134.06841.9[786.5, 1577.1, 3231.6, 4355.5, 16091, 19805, 23780, 29287, 33878, 38726, 45962, 50502, 235196, 257923]f0c8a0pChunk of Ultrapure Silicon, 2 x 2 cmhttps://upload.wikimedia.org/wikipedia/commons/2/2c/Silicon.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/silicon.php
16Phosphoruscolourless, waxy white, yellow, scarlet, red, violet, black30.9737619985polyatomic nonmetal1.823Hennig Brand23.82415315Solidhttps://en.wikipedia.org/wiki/Phosphorushttps://storage.googleapis.com/search-ar-edu/periodic-table/element_015_phosphorus/element_015_phosphorus_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_015_phosphorus/element_015_phosphorus.glbPhosphorus is a chemical element with symbol P and atomic number 15. As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but due to its high reactivity, phosphorus is never found as a free element on Earth. Instead phosphorus-containing minerals are almost always present in their maximally oxidised state, as inorganic phosphate rocks.P153293[2, 8, 5]1s2 2s2 2p6 3s2 3p3[Ne] 3s2 3p372.0372.19[1011.8, 1907, 2914.1, 4963.6, 6273.9, 21267, 25431, 29872, 35905, 40950, 46261, 54110, 59024, 271791, 296195]ff8000pPurple Phosphorushttps://upload.wikimedia.org/wikipedia/commons/6/6d/Phosphorus-purple.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/phosphorus.php
17Sulfurlemon yellow sintered microcrystals32.06717.8polyatomic nonmetal2.07Ancient china388.3622.7516316Solidhttps://en.wikipedia.org/wiki/Sulfurhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_016_sulfur/element_016_sulfur_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_016_sulfur/element_016_sulfur.glbhttps://en.wikipedia.org/wiki/File:Sulfur_Spectrum.jpgSulfur or sulphur (see spelling differences) is a chemical element with symbol S and atomic number 16. It is an abundant, multivalent non-metal. Under normal conditions, sulfur atoms form cyclic octatomic molecules with chemical formula S8.S163303[2, 8, 6]1s2 2s2 2p6 3s2 3p4[Ne] 3s2 3p4200.41012.58[999.6, 2252, 3357, 4556, 7004.3, 8495.8, 27107, 31719, 36621, 43177, 48710, 54460, 62930, 68216, 311048, 337138]ffff30pNative Sulfur From Russiahttps://upload.wikimedia.org/wikipedia/commons/2/23/Native_sulfur_%28Vodinskoe_Deposit%3B_quarry_near_Samara%2C_Russia%29_9.jpgJames St. John, CC BY 2.0 <https://creativecommons.org/licenses/by/2.0>, via Wikimedia Commons
18Chlorinepale yellow-green gas35.45239.11diatomic nonmetal3.2Carl Wilhelm Scheele171.617317Gashttps://en.wikipedia.org/wiki/Chlorinehttps://storage.googleapis.com/search-ar-edu/periodic-table/element_017_chlorine/element_017_chlorine_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_017_chlorine/element_017_chlorine.glbhttps://en.wikipedia.org/wiki/File:Chlorine_spectrum_visible.pngChlorine is a chemical element with symbol Cl and atomic number 17. It also has a relative atomic mass of 35.5. Chlorine is in the halogen group (17) and is the second lightest halogen following fluorine.Cl173313[2, 8, 7]1s2 2s2 2p6 3s2 3p5[Ne] 3s2 3p5348.5753.16[1251.2, 2298, 3822, 5158.6, 6542, 9362, 11018, 33604, 38600, 43961, 51068, 57119, 63363, 72341, 78095, 352994, 380760]1ff01fpA Sample of Chlorinehttps://upload.wikimedia.org/wikipedia/commons/9/9a/Chlorine-sample-flip.jpgBenjah-bmm27, Public domain, via Wikimedia Commons
19Argoncolorless gas exhibiting a lilac/violet glow when placed in a high voltage electric field39.948187.302noble gas1.784Lord Rayleigh83.8118318Gashttps://en.wikipedia.org/wiki/Argonhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_018_argon/element_018_argon_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_018_argon/element_018_argon.glbhttps://en.wikipedia.org/wiki/File:Argon_Spectrum.pngArgon is a chemical element with symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. Argon is the third most common gas in the Earth's atmosphere, at 0.934% (9,340 ppmv), making it over twice as abundant as the next most common atmospheric gas, water vapor (which averages about 4000 ppmv, but varies greatly), and 23 times as abundant as the next most common non-condensing atmospheric gas, carbon dioxide (400 ppmv), and more than 500 times as abundant as the next most common noble gas, neon (18 ppmv).Ar183323[2, 8, 8]1s2 2s2 2p6 3s2 3p6[Ne] 3s2 3p6-96.0[1520.6, 2665.8, 3931, 5771, 7238, 8781, 11995, 13842, 40760, 46186, 52002, 59653, 66199, 72918, 82473, 88576, 397605, 427066]80d1e3pVial of glowing ultrapure argon. Original size in cm: 1 x 5https://upload.wikimedia.org/wikipedia/commons/5/53/Argon-glow.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/argon.php
20Potassiumsilvery gray39.098311032.0alkali metal0.862Humphry Davy336.729.61941Solidhttps://en.wikipedia.org/wiki/Potassiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_019_potassium/element_019_potassium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_019_potassium/element_019_potassium.glbhttps://en.wikipedia.org/wiki/File:Potassium_Spectrum.jpgPotassium is a chemical element with symbol K (derived from Neo-Latin, kalium) and atomic number 19. It was first isolated from potash, the ashes of plants, from which its name is derived. In the Periodic table, potassium is one of seven elements in column (group) 1 (alkali metals):they all have a single valence electron in their outer electron shell, which they readily give up to create an atom with a positive charge - a cation, and combine with anions to form salts.K1414[2, 8, 8, 1]1s2 2s2 2p6 3s2 3p6 4s1[Ar] 4s148.3830.82[418.8, 3052, 4420, 5877, 7975, 9590, 11343, 14944, 16963.7, 48610, 54490, 60730, 68950, 75900, 83080, 93400, 99710, 444880, 476063]8f40d4sPotassium Pieceshttps://upload.wikimedia.org/wikipedia/commons/b/b3/Potassium.JPGDnn87, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons
21Calcium40.07841757.0alkaline earth metal1.55Humphry Davy1115.025.9292042Solidhttps://en.wikipedia.org/wiki/Calciumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_020_calcium/element_020_calcium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_020_calcium/element_020_calcium.glbhttps://en.wikipedia.org/wiki/File:Calcium_Spectrum.pngCalcium is a chemical element with symbol Ca and atomic number 20. Calcium is a soft gray alkaline earth metal, fifth-most-abundant element by mass in the Earth's crust. The ion Ca2+ is also the fifth-most-abundant dissolved ion in seawater by both molarity and mass, after sodium, chloride, magnesium, and sulfate.Ca2424[2, 8, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2[Ar] 4s22.371.0[589.8, 1145.4, 4912.4, 6491, 8153, 10496, 12270, 14206, 18191, 20385, 57110, 63410, 70110, 78890, 86310, 94000, 104900, 111711, 494850, 527762]3dff00sCalcium Grains, grain size about 1 mmhttps://upload.wikimedia.org/wikipedia/commons/7/72/Calcium.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/calcium.php
22Scandiumsilvery white44.95590853109.0transition metal2.985Lars Fredrik Nilson1814.025.522143Solidhttps://en.wikipedia.org/wiki/Scandiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_021_scandium/element_021_scandium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_021_scandium/element_021_scandium.glbScandium is a chemical element with symbol Sc and atomic number 21. A silvery-white metallic d-block element, it has historically been sometimes classified as a rare earth element, together with yttrium and the lanthanoids. It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia.Sc34174[2, 8, 9, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d1[Ar] 3d1 4s218.01.36[633.1, 1235, 2388.6, 7090.6, 8843, 10679, 13310, 15250, 17370, 21726, 24102, 66320, 73010, 80160, 89490, 97400, 105600, 117000, 124270, 547530, 582163]e6e6e6dCrystal of Scandium. About 1ghttps://upload.wikimedia.org/wikipedia/commons/f/f5/Scandium%2C_Sc.jpgJanDerChemiker, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons
23Titaniumsilvery grey-white metallic47.86713560.0transition metal4.506William Gregor1941.025.06Martin Heinrich Klaproth2244Solidhttps://en.wikipedia.org/wiki/Titaniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_022_titanium/element_022_titanium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_022_titanium/element_022_titanium.glbTitanium is a chemical element with symbol Ti and atomic number 22. It is a lustrous transition metal with a silver color, low density and high strength. It is highly resistant to corrosion in sea water, aqua regia and chlorine.Ti44184[2, 8, 10, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d2[Ar] 3d2 4s27.2891.54[658.8, 1309.8, 2652.5, 4174.6, 9581, 11533, 13590, 16440, 18530, 20833, 25575, 28125, 76015, 83280, 90880, 100700, 109100, 117800, 129900, 137530, 602930, 639294]bfc2c7dTitanium Crystal made with the van Arkel-de Booer Process. 87 grams, Original size in cm: 2.5 x 4https://upload.wikimedia.org/wikipedia/commons/e/ec/Titanium.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/titanium.php
24Vanadiumblue-silver-grey metal50.941513680.0transition metal6.0Andrés Manuel del Río2183.024.89Isotopes of vanadium2345Solidhttps://en.wikipedia.org/wiki/Vanadiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_023_vanadium/element_023_vanadium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_023_vanadium/element_023_vanadium.glbVanadium is a chemical element with symbol V and atomic number 23. It is a hard, silvery grey, ductile and malleable transition metal. The element is found only in chemically combined form in nature, but once isolated artificially, the formation of an oxide layer stabilizes the free metal somewhat against further oxidation.V54194[2, 8, 11, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d3[Ar] 3d3 4s250.9111.63[650.9, 1414, 2830, 4507, 6298.7, 12363, 14530, 16730, 19860, 22240, 24670, 29730, 32446, 86450, 94170, 102300, 112700, 121600, 130700, 143400, 151440, 661050, 699144]a6a6abdPieces of Pure Vanadium with Oxide Layerhttps://upload.wikimedia.org/wikipedia/commons/0/0a/Vanadium-pieces.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/vanadium.php
25Chromiumsilvery metallic51.996162944.0transition metal7.19Louis Nicolas Vauquelin2180.023.352446Solidhttps://en.wikipedia.org/wiki/Chromiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_024_chromium/element_024_chromium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_024_chromium/element_024_chromium.glbChromium is a chemical element with symbol Cr and atomic number 24. It is the first element in Group 6. It is a steely-gray, lustrous, hard and brittle metal which takes a high polish, resists tarnishing, and has a high melting point.Cr64204[2, 8, 13, 1]1s2 2s2 2p6 3s2 3p6 4s1 3d5[Ar] 3d5 4s165.211.66[652.9, 1590.6, 2987, 4743, 6702, 8744.9, 15455, 17820, 20190, 23580, 26130, 28750, 34230, 37066, 97510, 105800, 114300, 125300, 134700, 144300, 157700, 166090, 721870, 761733]8a99c7dPiece of Chromium Metalhttps://upload.wikimedia.org/wikipedia/commons/a/a1/Chromium.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/chromium.php
26Manganesesilvery metallic54.93804432334.0transition metal7.21Torbern Olof Bergman1519.026.322547Solidhttps://en.wikipedia.org/wiki/Manganesehttps://storage.googleapis.com/search-ar-edu/periodic-table/element_025_manganese/element_025_manganese_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_025_manganese/element_025_manganese.glbManganese is a chemical element with symbol Mn and atomic number 25. It is not found as a free element in nature; it is often found in combination with iron, and in many minerals. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels.Mn74214[2, 8, 13, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d5[Ar] 3d5 4s2-50.01.55[717.3, 1509, 3248, 4940, 6990, 9220, 11500, 18770, 21400, 23960, 27590, 30330, 33150, 38880, 41987, 109480, 118100, 127100, 138600, 148500, 158600, 172500, 181380, 785450, 827067]9c7ac7dTwo Oieces of Manganese Metalhttps://upload.wikimedia.org/wikipedia/commons/6/64/Manganese_element.jpgW. Oelen, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons
27Ironlustrous metallic with a grayish tinge55.84523134.0transition metal7.8745000 BC1811.025.12648Solidhttps://en.wikipedia.org/wiki/Ironhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_026_iron/element_026_iron_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_026_iron/element_026_iron.glbhttps://en.wikipedia.org/wiki/File:Iron_Spectrum.jpgIron is a chemical element with symbol Fe (from Latin:ferrum) and atomic number 26. It is a metal in the first transition series. It is by mass the most common element on Earth, forming much of Earth's outer and inner core.Fe84224[2, 8, 14, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d6[Ar] 3d6 4s214.7851.83[762.5, 1561.9, 2957, 5290, 7240, 9560, 12060, 14580, 22540, 25290, 28000, 31920, 34830, 37840, 44100, 47206, 122200, 131000, 140500, 152600, 163000, 173600, 188100, 195200, 851800, 895161]e06633dFragments of an iron meteorite, about 92% iron. Original size of the single pieces in cm: 0.4 - 0.8https://images-of-elements.com/iron-2.jpgChemical ELements A Virtual Museum, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0> source: https://images-of-elements.com/iron.php
28Cobalthard lustrous gray metal58.93319443200.0transition metal8.9Georg Brandt1768.024.812749Solidhttps://en.wikipedia.org/wiki/Cobalthttps://storage.googleapis.com/search-ar-edu/periodic-table/element_027_cobalt/element_027_cobalt_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_027_cobalt/element_027_cobalt.glbCobalt is a chemical element with symbol Co and atomic number 27. Like nickel, cobalt in the Earth's crust is found only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.Co94234[2, 8, 15, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d7[Ar] 3d7 4s263.8981.88[760.4, 1648, 3232, 4950, 7670, 9840, 12440, 15230, 17959, 26570, 29400, 32400, 36600, 39700, 42800, 49396, 52737, 134810, 145170, 154700, 167400, 178100, 189300, 204500, 214100, 920870, 966023]f090a0dFractions from a cobalt, 7 and 4 grams. Original size in cm: 2 x 2https://upload.wikimedia.org/wikipedia/commons/6/62/Cobalt_ore_2.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/cobalt.php
29Nickellustrous, metallic, and silver with a gold tinge58.693443003.0transition metal8.908Axel Fredrik Cronstedt1728.026.0728410Solidhttps://en.wikipedia.org/wiki/Nickelhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_028_nickel/element_028_nickel_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_028_nickel/element_028_nickel.glbNickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile.Ni104244[2, 8, 16, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d8[Ar] 3d8 4s2111.651.91[737.1, 1753, 3395, 5300, 7339, 10400, 12800, 15600, 18600, 21670, 30970, 34000, 37100, 41500, 44800, 48100, 55101, 58570, 148700, 159000, 169400, 182700, 194000, 205600, 221400, 231490, 992718, 1039668]50d050dNickel Chunkhttps://upload.wikimedia.org/wikipedia/commons/5/57/Nickel_chunk.jpgMaterialscientist at English Wikipedia, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons
30Copperred-orange metallic luster63.54632835.0transition metal8.96Middle East1357.7724.4429411Solidhttps://en.wikipedia.org/wiki/Copperhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_029_copper/element_029_copper_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_029_copper/element_029_copper.glbCopper is a chemical element with symbol Cu (from Latin:cuprum) and atomic number 29. It is a soft, malleable and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a reddish-orange color.Cu114254[2, 8, 18, 1]1s2 2s2 2p6 3s2 3p6 4s1 3d10[Ar] 3d10 4s1119.2351.9[745.5, 1957.9, 3555, 5536, 7700, 9900, 13400, 16000, 19200, 22400, 25600, 35600, 38700, 42000, 46700, 50200, 53700, 61100, 64702, 163700, 174100, 184900, 198800, 210500, 222700, 239100, 249660, 1067358, 1116105]c88033dMacro of Native Copper about 1 ½ inches (4 cm) in sizehttps://upload.wikimedia.org/wikipedia/commons/f/f0/NatCopper.jpgNative_Copper_Macro_Digon3.jpg: 'Jonathan Zander (Digon3)' derivative work: Materialscientist, CC BY-SA 2.5 <https://creativecommons.org/licenses/by-sa/2.5>, via Wikimedia Commons
31Zincsilver-gray65.3821180.0transition metal7.14India692.6825.4730412Solidhttps://en.wikipedia.org/wiki/Zinchttps://storage.googleapis.com/search-ar-edu/periodic-table/element_030_zinc/element_030_zinc_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_030_zinc/element_030_zinc.glbZinc, in commerce also spelter, is a chemical element with symbol Zn and atomic number 30. It is the first element of group 12 of the periodic table. In some respects zinc is chemically similar to magnesium:its ion is of similar size and its only common oxidation state is +2.Zn124264[2, 8, 18, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10[Ar] 3d10 4s2-58.01.65[906.4, 1733.3, 3833, 5731, 7970, 10400, 12900, 16800, 19600, 23000, 26400, 29990, 40490, 43800, 47300, 52300, 55900, 59700, 67300, 71200, 179100]7d80b0d30 grams Zinc, front and back side. Original size in cm: 3https://upload.wikimedia.org/wikipedia/commons/b/ba/Zinc_%2830_Zn%29.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/zinc.php
32Galliumsilver-white69.72312673.0post-transition metal5.91Lecoq de Boisbaudran302.914625.8631413Solidhttps://en.wikipedia.org/wiki/Galliumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_031_gallium/element_031_gallium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_031_gallium/element_031_gallium.glbGallium is a chemical element with symbol Ga and atomic number 31. Elemental gallium does not occur in free form in nature, but as the gallium(III) compounds that are in trace amounts in zinc ores and in bauxite. Gallium is a soft, silvery metal, and elemental gallium is a brittle solid at low temperatures, and melts at 29.76 °C (85.57 °F) (slightly above room temperature).Ga134274[2, 8, 18, 3]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1[Ar] 3d10 4s2 4p141.01.81[578.8, 1979.3, 2963, 6180]c28f8fpSolid gallium, fresh and after some time (2 months) at room temperaturehttps://upload.wikimedia.org/wikipedia/commons/b/b1/Solid_gallium_%28Ga%29.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/gallium.php
33Germaniumgrayish-white72.63083106.0metalloid5.323Clemens Winkler1211.423.22232414Solidhttps://en.wikipedia.org/wiki/Germaniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_032_germanium/element_032_germanium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_032_germanium/element_032_germanium.glbGermanium is a chemical element with symbol Ge and atomic number 32. It is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Purified germanium is a semiconductor, with an appearance most similar to elemental silicon.Ge144284[2, 8, 18, 4]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2[Ar] 3d10 4s2 4p2118.93522.01[762, 1537.5, 3302.1, 4411, 9020]668f8fp12 Grams Polycrystalline Germanium, 2*3 cmhttps://upload.wikimedia.org/wikipedia/commons/0/08/Polycrystalline-germanium.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/germanium.php
34Arsenicmetallic grey74.9215956metalloid5.727Bronze Age24.6433415Solidhttps://en.wikipedia.org/wiki/Arsenichttps://storage.googleapis.com/search-ar-edu/periodic-table/element_033_arsenic/element_033_arsenic_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_033_arsenic/element_033_arsenic.glbArsenic is a chemical element with symbol As and atomic number 33. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. Arsenic is a metalloid.As154294[2, 8, 18, 5]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3[Ar] 3d10 4s2 4p377.652.18[947, 1798, 2735, 4837, 6043, 12310]bd80e3pUltrapure Metallic Arsenic under Argon, 1 - 2 grams. Original size of each piece in cm: 0.5 x 1https://upload.wikimedia.org/wikipedia/commons/3/3b/Arsenic_%2833_As%29.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/arsenic.php
35Seleniumblack, red, and gray (not pictured) allotropes78.9718958.0polyatomic nonmetal4.81Jöns Jakob Berzelius494.025.36334416Solidhttps://en.wikipedia.org/wiki/Seleniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_034_selenium/element_034_selenium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_034_selenium/element_034_selenium.glbSelenium is a chemical element with symbol Se and atomic number 34. It is a nonmetal with properties that are intermediate between those of its periodic table column-adjacent chalcogen elements sulfur and tellurium. It rarely occurs in its elemental state in nature, or as pure ore compounds.Se164304[2, 8, 18, 6]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4[Ar] 3d10 4s2 4p4194.95872.55[941, 2045, 2973.7, 4144, 6590, 7880, 14990]ffa100pUltrapure Black, Amorphous Selenium, 3 - 4 grams. Original size in cm: 2https://upload.wikimedia.org/wikipedia/commons/7/7f/Selenium.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/selenium.php
36Bromine79.904332.0diatomic nonmetal3.1028Antoine Jérôme Balard265.835417Liquidhttps://en.wikipedia.org/wiki/Brominehttps://storage.googleapis.com/search-ar-edu/periodic-table/element_035_bromine/element_035_bromine_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_035_bromine/element_035_bromine.glbBromine (from Ancient Greek:βρῶμος, brómos, meaning "stench") is a chemical element with symbol Br, and atomic number 35. It is a halogen. The element was isolated independently by two chemists, Carl Jacob Löwig and Antoine Jerome Balard, in 18251826.Br174314[2, 8, 18, 7]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5[Ar] 3d10 4s2 4p5324.5372.96[1139.9, 2103, 3470, 4560, 5760, 8550, 9940, 18600]a62929p99.5 % pure liquid Bromine in a 4 x 1 cm big glass ampoule, cast in acrylichttps://upload.wikimedia.org/wikipedia/commons/8/87/Bromine-ampoule.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/bromine.php
37Kryptoncolorless gas, exhibiting a whitish glow in a high electric field83.7982119.93noble gas3.749William Ramsay115.7836418Gashttps://en.wikipedia.org/wiki/Kryptonhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_036_krypton/element_036_krypton_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_036_krypton/element_036_krypton.glbhttps://en.wikipedia.org/wiki/File:Krypton_Spectrum.jpgKrypton (from Greek:κρυπτός kryptos "the hidden one") is a chemical element with symbol Kr and atomic number 36. It is a member of group 18 (noble gases) elements. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere, is isolated by fractionally distilling liquefied air, and is often used with other rare gases in fluorescent lamps.Kr184324[2, 8, 18, 8]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6[Ar] 3d10 4s2 4p6-96.03.0[1350.8, 2350.4, 3565, 5070, 6240, 7570, 10710, 12138, 22274, 25880, 29700, 33800, 37700, 43100, 47500, 52200, 57100, 61800, 75800, 80400, 85300, 90400, 96300, 101400, 111100, 116290, 282500, 296200, 311400, 326200]5cb8d1pVial of Glowing Ultrapure Krypton. Original size in cm: 1 x 5.https://upload.wikimedia.org/wikipedia/commons/9/9c/Krypton-glow.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/krypton.php
38Rubidiumgrey white85.46783961.0alkali metal1.532Robert Bunsen312.4531.063751Solidhttps://en.wikipedia.org/wiki/Rubidiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_037_rubidium/element_037_rubidium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_037_rubidium/element_037_rubidium.glbRubidium is a chemical element with symbol Rb and atomic number 37. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, such as very rapid oxidation in air.Rb1515[2, 8, 18, 8, 1]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1[Kr] 5s146.8840.82[403, 2633, 3860, 5080, 6850, 8140, 9570, 13120, 14500, 26740]702eb0sRubidium Metal Samplehttps://upload.wikimedia.org/wikipedia/commons/c/c9/Rb5.JPGDnn87, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons
39Strontium87.6211650.0alkaline earth metal2.64William Cruickshank (chemist)1050.026.43852Solidhttps://en.wikipedia.org/wiki/Strontiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_038_strontium/element_038_strontium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_038_strontium/element_038_strontium.glbStrontium is a chemical element with symbol Sr and atomic number 38. An alkaline earth metal, strontium is a soft silver-white or yellowish metallic element that is highly reactive chemically. The metal turns yellow when it is exposed to air.Sr2525[2, 8, 18, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2[Kr] 5s25.0230.95[549.5, 1064.2, 4138, 5500, 6910, 8760, 10230, 11800, 15600, 17100, 31270]00ff00sStrontium Pieces under Paraffin Oil.https://upload.wikimedia.org/wikipedia/commons/8/84/Strontium-1.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/strontium.php
40Yttriumsilvery white88.9058423203.0transition metal4.472Johan Gadolin1799.026.533953Solidhttps://en.wikipedia.org/wiki/Yttriumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_039_yttrium/element_039_yttrium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_039_yttrium/element_039_yttrium.glbYttrium is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and it has often been classified as a "rare earth element". Yttrium is almost always found combined with the lanthanides in rare earth minerals and is never found in nature as a free element.Y35175[2, 8, 18, 9, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d1[Kr] 4d1 5s229.61.22[600, 1180, 1980, 5847, 7430, 8970, 11190, 12450, 14110, 18400, 19900, 36090]94ffffd6,21g Yttrium, Reinheit mindestens 99%.https://upload.wikimedia.org/wikipedia/commons/9/90/Piece_of_Yttrium.jpgJan Anskeit, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons
41Zirconiumsilvery white91.22424650.0transition metal6.52Martin Heinrich Klaproth2128.025.364054Solidhttps://en.wikipedia.org/wiki/Zirconiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_040_zirconium/element_040_zirconium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_040_zirconium/element_040_zirconium.glbZirconium is a chemical element with symbol Zr and atomic number 40. The name of zirconium is taken from the name of the mineral zircon, the most important source of zirconium. The word zircon comes from the Persian word zargun زرگون, meaning "gold-colored".Zr45185[2, 8, 18, 10, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d2[Kr] 4d2 5s241.8061.33[640.1, 1270, 2218, 3313, 7752, 9500]94e0e0dTwo pieces of Zirconium, 1 cm each.https://upload.wikimedia.org/wikipedia/commons/1/1d/Zirconium-pieces.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/zirconium.php
42Niobiumgray metallic, bluish when oxidized92.9063725017.0transition metal8.57Charles Hatchett2750.024.64155Solidhttps://en.wikipedia.org/wiki/Niobiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_041_niobium/element_041_niobium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_041_niobium/element_041_niobium.glbNiobium, formerly columbium, is a chemical element with symbol Nb (formerly Cb) and atomic number 41. It is a soft, grey, ductile transition metal, which is often found in the pyrochlore mineral, the main commercial source for niobium, and columbite. The name comes from Greek mythology:Niobe, daughter of Tantalus since it is so similar to tantalum.Nb55195[2, 8, 18, 12, 1]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d4[Kr] 4d4 5s188.5161.6[652.1, 1380, 2416, 3700, 4877, 9847, 12100]73c2c9dNiobium stripshttps://upload.wikimedia.org/wikipedia/commons/c/c2/Niobium_strips.JPGMauro Cateb, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons
43Molybdenumgray metallic95.9514912.0transition metal10.28Carl Wilhelm Scheele2896.024.064256Solidhttps://en.wikipedia.org/wiki/Molybdenumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_042_molybdenum/element_042_molybdenum_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_042_molybdenum/element_042_molybdenum.glbMolybdenum is a chemical element with symbol Mo and atomic number 42. The name is from Neo-Latin molybdaenum, from Ancient Greek Μόλυβδος molybdos, meaning lead, since its ores were confused with lead ores. Molybdenum minerals have been known throughout history, but the element was discovered (in the sense of differentiating it as a new entity from the mineral salts of other metals) in 1778 by Carl Wilhelm Scheele.Mo65205[2, 8, 18, 13, 1]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d5[Kr] 4d5 5s172.12.16[684.3, 1560, 2618, 4480, 5257, 6640.8, 12125, 13860, 15835, 17980, 20190, 22219, 26930, 29196, 52490, 55000, 61400, 67700, 74000, 80400, 87000, 93400, 98420, 104400, 121900, 127700, 133800, 139800, 148100, 154500]54b5b5d99.9 Pure Molybdenum Crystal, about 2 x 3 cm, with anodisation colorhttps://upload.wikimedia.org/wikipedia/commons/f/f0/Molybdenum.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/molybdenum.php
44Technetiumshiny gray metal98.04538.0transition metal11.0Emilio Segrè2430.024.274357Solidhttps://en.wikipedia.org/wiki/Technetiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_043_technetium/element_043_technetium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_043_technetium/element_043_technetium.glbTechnetium (/tɛkˈniːʃiəm/) is a chemical element with symbol Tc and atomic number 43. It is the element with the lowest atomic number in the periodic table that has no stable isotopes:every form of it is radioactive. Nearly all technetium is produced synthetically, and only minute amounts are found in nature.Tc75215[2, 8, 18, 13, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d5[Kr] 4d5 5s253.01.9[702, 1470, 2850]3b9e9edTechnetium Sample inside a sealed glass ampoule, filled with argon gas. 6x1 mm goldfoil covered with 99Tc powder (electroplated).https://upload.wikimedia.org/wikipedia/commons/a/ab/Technetium-sample-cropped.jpgGFDL, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons
45Rutheniumsilvery white metallic101.0724423.0transition metal12.45Karl Ernst Claus2607.024.064458Solidhttps://en.wikipedia.org/wiki/Rutheniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_044_ruthenium/element_044_ruthenium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_044_ruthenium/element_044_ruthenium.glbRuthenium is a chemical element with symbol Ru and atomic number 44. It is a rare transition metal belonging to the platinum group of the periodic table. Like the other metals of the platinum group, ruthenium is inert to most other chemicals.Ru85225[2, 8, 18, 15, 1]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d7[Kr] 4d7 5s1100.962.2[710.2, 1620, 2747]248f8fdRuthenium Crystal, 0.6 grams, 0.6 x 1.3 cm sizehttps://upload.wikimedia.org/wikipedia/commons/a/a8/Ruthenium_crystal.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/ruthenium.php
46Rhodiumsilvery white metallic102.9055023968.0transition metal12.41William Hyde Wollaston2237.024.984559Solidhttps://en.wikipedia.org/wiki/Rhodiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_045_rhodium/element_045_rhodium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_045_rhodium/element_045_rhodium.glbRhodium is a chemical element with symbol Rh and atomic number 45. It is a rare, silvery-white, hard, and chemically inert transition metal. It is a member of the platinum group.Rh95235[2, 8, 18, 16, 1]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d8[Kr] 4d8 5s1110.272.28[719.7, 1740, 2997]0a7d8cdPure Rhodium Bead, 1 gram. Original size in cm: 0.5https://upload.wikimedia.org/wikipedia/commons/5/54/Rhodium_%28Rh%29.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/rhodium.php
47Palladiumsilvery white106.4213236.0transition metal12.023William Hyde Wollaston1828.0525.9846510Solidhttps://en.wikipedia.org/wiki/Palladiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_046_palladium/element_046_palladium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_046_palladium/element_046_palladium.glbPalladium is a chemical element with symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was itself named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas.Pd105245[2, 8, 18, 18]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10[Kr] 4d1054.242.2[804.4, 1870, 3177]006985dPalladium Crystal, about 1 gram. Original size in cm: 0.5 x 1https://upload.wikimedia.org/wikipedia/commons/d/d7/Palladium_%2846_Pd%29.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/palladium.php
48Silverlustrous white metal107.868222435.0transition metal10.49unknown, before 5000 BC1234.9325.3547511Solidhttps://en.wikipedia.org/wiki/Silverhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_047_silver/element_047_silver_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_047_silver/element_047_silver.glbSilver is a chemical element with symbol Ag (Greek:άργυρος árguros, Latin:argentum, both from the Indo-European root *h₂erǵ- for "grey" or "shining") and atomic number 47. A soft, white, lustrous transition metal, it possesses the highest electrical conductivity, thermal conductivity and reflectivity of any metal. The metal occurs naturally in its pure, free form (native silver), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite.Ag115255[2, 8, 18, 18, 1]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d10[Kr] 4d10 5s1125.8621.93[731, 2070, 3361]c0c0c0dNatural silver nugget, 1 cm long.https://upload.wikimedia.org/wikipedia/commons/e/e4/Silver-nugget.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: http://images-of-elements.com/silver.php
49Cadmiumsilvery bluish-gray metallic112.41441040.0transition metal8.65Karl Samuel Leberecht Hermann594.2226.02Isotopes of cadmium48512Solidhttps://en.wikipedia.org/wiki/Cadmiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_048_cadmium/element_048_cadmium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_048_cadmium/element_048_cadmium.glbCadmium is a chemical element with symbol Cd and atomic number 48. This soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Like zinc, it prefers oxidation state +2 in most of its compounds and like mercury it shows a low melting point compared to transition metals.Cd125265[2, 8, 18, 18, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10[Kr] 4d10 5s2-68.01.69[867.8, 1631.4, 3616]ffd98fd48 Cd Cadmiumhttps://images-of-elements.com/cadmium-4.jpgChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/cadmium.php
50Indiumsilvery lustrous gray114.81812345.0post-transition metal7.31Ferdinand Reich429.748526.7449513Solidhttps://en.wikipedia.org/wiki/Indiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_049_indium/element_049_indium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_049_indium/element_049_indium.glbIndium is a chemical element with symbol In and atomic number 49. It is a post-transition metallic element that is rare in Earth's crust. The metal is very soft, malleable and easily fusible, with a melting point higher than sodium, but lower than lithium or tin.In135275[2, 8, 18, 18, 3]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p1[Kr] 4d10 5s2 5p137.0431.78[558.3, 1820.7, 2704, 5210]a67573p1.5 x 1.5 cm liquid indiumhttps://images-of-elements.com/indium-2.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: http://images-of-elements.com/indium.php
51Tinsilvery-white (beta, β) or gray (alpha, α)118.71072875.0post-transition metal7.365unknown, before 3500 BC505.0827.11250514Solidhttps://en.wikipedia.org/wiki/Tinhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_050_tin/element_050_tin_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_050_tin/element_050_tin.glbTin is a chemical element with the symbol Sn (for Latin:stannum) and atomic number 50. It is a main group metal in group 14 of the periodic table. Tin shows a chemical similarity to both neighboring group-14 elements, germanium and lead, and has two possible oxidation states, +2 and the slightly more stable +4.Sn145285[2, 8, 18, 18, 4]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p2[Kr] 4d10 5s2 5p2107.29841.96[708.6, 1411.8, 2943, 3930.3, 7456]668080pTin blobhttps://upload.wikimedia.org/wikipedia/commons/6/6a/Tin-2.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: http://images-of-elements.com/tin.php
52Antimonysilvery lustrous gray121.76011908.0metalloid6.697unknown, before 3000 BC903.7825.2351515Solidhttps://en.wikipedia.org/wiki/Antimonyhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_051_antimony/element_051_antimony_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_051_antimony/element_051_antimony.glbAntimony is a chemical element with symbol Sb (from Latin:stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb2S3). Antimony compounds have been known since ancient times and were used for cosmetics; metallic antimony was also known, but it was erroneously identified as lead upon its discovery.Sb155295[2, 8, 18, 18, 5]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p3[Kr] 4d10 5s2 5p3101.0592.05[834, 1594.9, 2440, 4260, 5400, 10400]9e63b5pAntimony crystal, 2 grams, 1 cmhttps://upload.wikimedia.org/wikipedia/commons/5/5c/Antimony-4.jpgUnknown authorUnknown author, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/antimony.php
53Tellurium127.6031261.0metalloid6.24Franz-Joseph Müller von Reichenstein722.6625.7352516Solidhttps://en.wikipedia.org/wiki/Telluriumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_052_tellurium/element_052_tellurium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_052_tellurium/element_052_tellurium.glbTellurium is a chemical element with symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur.Te165305[2, 8, 18, 18, 6]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p4[Kr] 4d10 5s2 5p4190.1612.1[869.3, 1790, 2698, 3610, 5668, 6820, 13200]d47a00pMetallic tellurium, diameter 3.5 cmhttps://upload.wikimedia.org/wikipedia/commons/c/c1/Tellurium2.jpgUnknown authorUnknown author, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/tellurium.php
54Iodinelustrous metallic gray, violet as a gas126.904473457.4diatomic nonmetal4.933Bernard Courtois386.8553517Solidhttps://en.wikipedia.org/wiki/Iodinehttps://storage.googleapis.com/search-ar-edu/periodic-table/element_053_iodine/element_053_iodine_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_053_iodine/element_053_iodine.glbIodine is a chemical element with symbol I and atomic number 53. The name is from Greek ἰοειδής ioeidēs, meaning violet or purple, due to the color of iodine vapor. Iodine and its compounds are primarily used in nutrition, and industrially in the production of acetic acid and certain polymers.I175315[2, 8, 18, 18, 7]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p5[Kr] 4d10 5s2 5p5295.15312.66[1008.4, 1845.9, 3180]940094pIodine Samplehttps://upload.wikimedia.org/wikipedia/commons/c/c2/Iodine-sample.jpgBenjah-bmm27, Public domain, via Wikimedia Commons
55Xenoncolorless gas, exhibiting a blue glow when placed in a high voltage electric field131.2936165.051noble gas5.894William Ramsay161.454518Gashttps://en.wikipedia.org/wiki/Xenonhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_054_xenon/element_054_xenon_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_054_xenon/element_054_xenon.glbhttps://en.wikipedia.org/wiki/File:Xenon_Spectrum.jpgXenon is a chemical element with symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas, that occurs in the Earth's atmosphere in trace amounts. Although generally unreactive, xenon can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized.Xe185325[2, 8, 18, 18, 8]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6[Kr] 4d10 5s2 5p6-77.02.6[1170.4, 2046.4, 3099.4]429eb0pVial of glowing ultrapure xenon. Original size in cm: 1 x 5https://upload.wikimedia.org/wikipedia/commons/5/5d/Xenon-glow.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/xenon.php
56Cesiumsilvery gold132.905451966944.0alkali metal1.93Robert Bunsen301.732.215561Solidhttps://en.wikipedia.org/wiki/Cesiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_055_cesium/element_055_cesium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_055_cesium/element_055_cesium.glbCaesium or cesium is a chemical element with symbol Cs and atomic number 55. It is a soft, silvery-gold alkali metal with a melting point of 28 °C (82 °F), which makes it one of only five elemental metals that are liquid at or near room temperature. Caesium is an alkali metal and has physical and chemical properties similar to those of rubidium and potassium.Cs1616[2, 8, 18, 18, 8, 1]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1[Xe] 6s145.5050.79[375.7, 2234.3, 3400]57178fsCesium/Caesium metalhttps://upload.wikimedia.org/wikipedia/commons/3/3d/Cesium.jpgDnn87 Contact email: Dnn87yahoo.dk, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons
57Barium137.32772118.0alkaline earth metal3.51Carl Wilhelm Scheele1000.028.075662Solidhttps://en.wikipedia.org/wiki/Bariumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_056_barium/element_056_barium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_056_barium/element_056_barium.glbBarium is a chemical element with symbol Ba and atomic number 56. It is the fifth element in Group 2, a soft silvery metallic alkaline earth metal. Because of its high chemical reactivity barium is never found in nature as a free element.Ba2626[2, 8, 18, 18, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2[Xe] 6s213.9540.89[502.9, 965.2, 3600]00c900s1.5 Grams Barium with a Grey Oxide Layer under Argon. Original size in cm: 0.7 x 1https://upload.wikimedia.org/wikipedia/commons/f/f5/Barium_%2856_Ba%29.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/barium.php
58Lanthanumsilvery white138.9054773737.0lanthanide6.162Carl Gustaf Mosander1193.027.115763Solidhttps://en.wikipedia.org/wiki/Lanthanumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_057_lanthanum/element_057_lanthanum_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_057_lanthanum/element_057_lanthanum.glbLanthanum is a soft, ductile, silvery-white metallic chemical element with symbol La and atomic number 57. It tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. It gave its name to the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table:it is also sometimes considered the first element of the 6th-period transition metals.La3936[2, 8, 18, 18, 9, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 5d1[Xe] 5d16s253.01.1[538.1, 1067, 1850.3, 4819, 5940]70d4fff1 cm Big Piece of Pure Lanthanumhttps://upload.wikimedia.org/wikipedia/commons/f/f7/Lanthanum.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/lanthanum.php
59Ceriumsilvery white140.11613716.0lanthanide6.77Martin Heinrich Klaproth1068.026.945863Solidhttps://en.wikipedia.org/wiki/Ceriumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_058_cerium/element_058_cerium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_058_cerium/element_058_cerium.glbCerium is a chemical element with symbol Ce and atomic number 58. It is a soft, silvery, ductile metal which easily oxidizes in air. Cerium was named after the dwarf planet Ceres (itself named after the Roman goddess of agriculture).Ce4946[2, 8, 18, 19, 9, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 5d1 4f1[Xe] 4f1 5d1 6s255.01.12[534.4, 1050, 1949, 3547, 6325, 7490]ffffc7fUltrapure Cerium under Argon, 1.5 grams. Original size in cm: 1 x 1https://upload.wikimedia.org/wikipedia/commons/0/0d/Cerium2.jpgJurii, CC BY 1.0 <https://creativecommons.org/licenses/by/1.0>, via Wikimedia Commons, source: https://images-of-elements.com/cerium.php
60Praseodymiumgrayish white140.9076623403.0lanthanide6.77Carl Auer von Welsbach1208.027.25963Solidhttps://en.wikipedia.org/wiki/Praseodymiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_059_praseodymium/element_059_praseodymium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_059_praseodymium/element_059_praseodymium.glbPraseodymium is a chemical element with symbol Pr and atomic number 59. Praseodymium is a soft, silvery, malleable and ductile metal in the lanthanide group. It is valued for its magnetic, electrical, chemical, and optical properties.Pr5956[2, 8, 18, 21, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f3[Xe] 4f3 6s293.01.13[527, 1020, 2086, 3761, 5551]d9ffc7f1.5 Grams Praseodymium under Argon, 0.5 cm big pieceshttps://upload.wikimedia.org/wikipedia/commons/c/c7/Praseodymium.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/praseodymium.php
61Neodymiumsilvery white144.24233347.0lanthanide7.01Carl Auer von Welsbach1297.027.456063Solidhttps://en.wikipedia.org/wiki/Neodymiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_060_neodymium/element_060_neodymium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_060_neodymium/element_060_neodymium.glbNeodymium is a chemical element with symbol Nd and atomic number 60. It is a soft silvery metal that tarnishes in air. Neodymium was discovered in 1885 by the Austrian chemist Carl Auer von Welsbach.Nd6966[2, 8, 18, 22, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f4[Xe] 4f4 6s2184.871.14[533.1, 1040, 2130, 3900]c7ffc7fUltrapure Neodymium under Argon, 5 grams. Original length of the large piece in cm: 1https://upload.wikimedia.org/wikipedia/commons/c/c9/Neodymium_%2860_Nd%29.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/neodymium.php
62Promethiummetallic145.03273.0lanthanide7.26Chien Shiung Wu1315.0Isotopes of promethium6163Solidhttps://en.wikipedia.org/wiki/Promethiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_061_promethium/element_061_promethium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_061_promethium/element_061_promethium.glbPromethium, originally prometheum, is a chemical element with the symbol Pm and atomic number 61. All of its isotopes are radioactive; it is one of only two such elements that are followed in the periodic table by elements with stable forms, a distinction shared with technetium. Chemically, promethium is a lanthanide, which forms salts when combined with other elements.Pm7976[2, 8, 18, 23, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f5[Xe] 4f5 6s212.451.13[540, 1050, 2150, 3970]a3ffc7fPhotomontage of what promethium metal might look like (it is too radioactive and real images are not available)https://upload.wikimedia.org/wikipedia/commons/5/5b/Promethium.jpgUnknown authorUnknown author, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/promethium.php
63Samariumsilvery white150.3622173.0lanthanide7.52Lecoq de Boisbaudran1345.029.546263Solidhttps://en.wikipedia.org/wiki/Samariumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_062_samarium/element_062_samarium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_062_samarium/element_062_samarium.glbSamarium is a chemical element with symbol Sm and atomic number 62. It is a moderately hard silvery metal that readily oxidizes in air. Being a typical member of the lanthanide series, samarium usually assumes the oxidation state +3.Sm8986[2, 8, 18, 24, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f6[Xe] 4f6 6s215.631.17[544.5, 1070, 2260, 3990]8fffc7fUltrapure Sublimated Samarium, 2 grams. Original size in cm: 0.8 x 1.5https://upload.wikimedia.org/wikipedia/commons/8/88/Samarium-2.jpgUnknown authorUnknown author, CC BY 1.0 <https://creativecommons.org/licenses/by/1.0>, via Wikimedia Commons, source: https://images-of-elements.com/samarium.php
64Europium151.96411802.0lanthanide5.264Eugène-Anatole Demarçay1099.027.666363Solidhttps://en.wikipedia.org/wiki/Europiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_063_europium/element_063_europium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_063_europium/element_063_europium.glbEuropium is a chemical element with symbol Eu and atomic number 63. It was isolated in 1901 and is named after the continent of Europe. It is a moderately hard, silvery metal which readily oxidizes in air and water.Eu9996[2, 8, 18, 25, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f7[Xe] 4f7 6s211.21.2[547.1, 1085, 2404, 4120]61ffc7fWeakly Oxidized Europium, hence slightly yellowish. 1.5 grams, large piece 0.6 x 1.6 cm.https://upload.wikimedia.org/wikipedia/commons/6/6a/Europium.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/europium.php
65Gadoliniumsilvery white157.2533273.0lanthanide7.9Jean Charles Galissard de Marignac1585.037.036463Solidhttps://en.wikipedia.org/wiki/Gadoliniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_064_gadolinium/element_064_gadolinium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_064_gadolinium/element_064_gadolinium.glbGadolinium is a chemical element with symbol Gd and atomic number 64. It is a silvery-white, malleable and ductile rare-earth metal. It is found in nature only in combined (salt) form.Gd109106[2, 8, 18, 25, 9, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f7 5d1[Xe] 4f7 5d1 6s213.221.2[593.4, 1170, 1990, 4250]45ffc7fPure (99.95%) Amorphous Gadolinium, about 12 grams, 2 × 1.5 × 0.5 cm, cast in acrylic glasshttps://upload.wikimedia.org/wikipedia/commons/c/c2/Gadolinium-2.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/gadolinium.php
66Terbiumsilvery white158.9253523396.0lanthanide8.23Carl Gustaf Mosander1629.028.916563Solidhttps://en.wikipedia.org/wiki/Terbiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_065_terbium/element_065_terbium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_065_terbium/element_065_terbium.glbTerbium is a chemical element with symbol Tb and atomic number 65. It is a silvery-white rare earth metal that is malleable, ductile and soft enough to be cut with a knife. Terbium is never found in nature as a free element, but it is contained in many minerals, including cerite, gadolinite, monazite, xenotime and euxenite.Tb119116[2, 8, 18, 27, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f9[Xe] 4f9 6s2112.41.1[565.8, 1110, 2114, 3839]30ffc7fPure Terbium, 3 grams. Original size: 1 cmhttps://upload.wikimedia.org/wikipedia/commons/9/9a/Terbium-2.jpgUnknown authorUnknown author, CC BY 1.0 <https://creativecommons.org/licenses/by/1.0>, via Wikimedia Commons, source: https://images-of-elements.com/terbium.php
67Dysprosiumsilvery white162.50012840.0lanthanide8.54Lecoq de Boisbaudran1680.027.76663Solidhttps://en.wikipedia.org/wiki/Dysprosiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_066_dysprosium/element_066_dysprosium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_066_dysprosium/element_066_dysprosium.glbDysprosium is a chemical element with the symbol Dy and atomic number 66. It is a rare earth element with a metallic silver luster. Dysprosium is never found in nature as a free element, though it is found in various minerals, such as xenotime.Dy129126[2, 8, 18, 28, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f10[Xe] 4f10 6s233.961.22[573, 1130, 2200, 3990]1fffc7fPure Dysprosium Dendriteshttps://upload.wikimedia.org/wikipedia/commons/5/55/Dysprosium-2.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/dysprosium.php
68Holmiumsilvery white164.9303322873.0lanthanide8.79Marc Delafontaine1734.027.156763Solidhttps://en.wikipedia.org/wiki/Holmiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_067_holmium/element_067_holmium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_067_holmium/element_067_holmium.glbHolmium is a chemical element with symbol Ho and atomic number 67. Part of the lanthanide series, holmium is a rare earth element. Holmium was discovered by Swedish chemist Per Theodor Cleve.Ho139136[2, 8, 18, 29, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f11[Xe] 4f11 6s232.611.23[581, 1140, 2204, 4100]00ff9cfUltrapure Holmium, 17 grams. Original size in cm: 1.5 x 2.5https://upload.wikimedia.org/wikipedia/commons/0/0a/Holmium2.jpgUnknown authorUnknown author, CC BY 1.0 <https://creativecommons.org/licenses/by/1.0>, via Wikimedia Commons, source: https://images-of-elements.com/holmium.php
69Erbiumsilvery white167.25933141.0lanthanide9.066Carl Gustaf Mosander1802.028.126863Solidhttps://en.wikipedia.org/wiki/Erbiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_068_erbium/element_068_erbium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_068_erbium/element_068_erbium.glbErbium is a chemical element in the lanthanide series, with symbol Er and atomic number 68. A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements on Earth. As such, it is a rare earth element which is associated with several other rare elements in the mineral gadolinite from Ytterby in Sweden, where yttrium, ytterbium, and terbium were discovered.Er149146[2, 8, 18, 30, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f12[Xe] 4f12 6s230.11.24[589.3, 1150, 2194, 4120]00e675f9.5 Gramms Pure Erbium, 2 x 2 cmhttps://upload.wikimedia.org/wikipedia/commons/2/2a/Erbium-2.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/erbium.php
70Thuliumsilvery gray168.9342222223.0lanthanide9.32Per Teodor Cleve1818.027.036963Solidhttps://en.wikipedia.org/wiki/Thuliumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_069_thulium/element_069_thulium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_069_thulium/element_069_thulium.glbThulium is a chemical element with symbol Tm and atomic number 69. It is the thirteenth and antepenultimate (third-last) element in the lanthanide series. Like the other lanthanides, the most common oxidation state is +3, seen in its oxide, halides and other compounds.Tm159156[2, 8, 18, 31, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f13[Xe] 4f13 6s299.01.25[596.7, 1160, 2285, 4120]00d452fUltrapure (99.997%) Crystalline Thulium, 22.3 grams, 3 × 3 × 2 cm in sizehttps://upload.wikimedia.org/wikipedia/commons/6/6b/Thulium-2.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/thulium.php
71Ytterbium173.04511469.0lanthanide6.9Jean Charles Galissard de Marignac1097.026.747063Solidhttps://en.wikipedia.org/wiki/Ytterbiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_070_ytterbium/element_070_ytterbium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_070_ytterbium/element_070_ytterbium.glbYtterbium is a chemical element with symbol Yb and atomic number 70. It is the fourteenth and penultimate element in the lanthanide series, which is the basis of the relative stability of its +2 oxidation state. However, like the other lanthanides, its most common oxidation state is +3, seen in its oxide, halides and other compounds.Yb169166[2, 8, 18, 32, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14[Xe] 4f14 6s2-1.931.1[603.4, 1174.8, 2417, 4203]00bf38fYtterbium, 0.5 x 1 cmhttps://upload.wikimedia.org/wikipedia/commons/c/ce/Ytterbium-3.jpgJurii, CC BY 1.0 <https://creativecommons.org/licenses/by/1.0>, via Wikimedia Commons, source: https://images-of-elements.com/ytterbium.php
72Lutetiumsilvery white174.966813675.0lanthanide9.841Georges Urbain1925.026.867163Solidhttps://en.wikipedia.org/wiki/Lutetiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_071_lutetium/element_071_lutetium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_071_lutetium/element_071_lutetium.glbLutetium is a chemical element with symbol Lu and atomic number 71. It is a silvery white metal, which resists corrosion in dry, but not in moist air. It is considered the first element of the 6th-period transition metals and the last element in the lanthanide series, and is traditionally counted among the rare earths.Lu179176[2, 8, 18, 32, 9, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d1[Xe] 4f14 5d1 6s233.41.27[523.5, 1340, 2022.3, 4370, 6445]00ab24d1 cm Big Piece of Pure Lutetiumhttps://upload.wikimedia.org/wikipedia/commons/e/e8/Lutetium.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/lutetium.php
73Hafniumsteel gray178.4924876.0transition metal13.31Dirk Coster2506.025.737264Solidhttps://en.wikipedia.org/wiki/Hafniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_072_hafnium/element_072_hafnium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_072_hafnium/element_072_hafnium.glbhttps://en.wikipedia.org/wiki/File:Hafnium_spectrum_visible.pngHafnium is a chemical element with symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869, though it was not identified until 1923, making it the penultimate stable element to be discovered (rhenium was identified two years later).Hf46186[2, 8, 18, 32, 10, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d2[Xe] 4f14 5d2 6s217.181.3[658.5, 1440, 2250, 3216]4dc2ffdElectrolytic Hafnium, 22 grams. Original size in cm: 1 x 2 x 3https://upload.wikimedia.org/wikipedia/commons/1/17/Hafnium_%2872_Hf%29.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/hafnium.php
74Tantalumgray blue180.9478825731.0transition metal16.69Anders Gustaf Ekeberg3290.025.367365Solidhttps://en.wikipedia.org/wiki/Tantalumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_073_tantalum/element_073_tantalum_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_073_tantalum/element_073_tantalum.glbhttps://en.wikipedia.org/wiki/File:Tantalum_spectrum_visible.pngTantalum is a chemical element with symbol Ta and atomic number 73. Previously known as tantalium, its name comes from Tantalus, an antihero from Greek mythology. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant.Ta56196[2, 8, 18, 32, 11, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d3[Xe] 4f14 5d3 6s231.01.5[761, 1500]4da6ffdPiece of tantalum, 1 cm in sizehttps://upload.wikimedia.org/wikipedia/commons/6/61/Tantalum.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/tantalum.php
75Tungstengrayish white, lustrous183.8416203.0transition metal19.25Carl Wilhelm Scheele3695.024.277466Solidhttps://en.wikipedia.org/wiki/Tungstenhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_074_tungsten/element_074_tungsten_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_074_tungsten/element_074_tungsten.glbTungsten, also known as wolfram, is a chemical element with symbol W and atomic number 74. The word tungsten comes from the Swedish language tung sten, which directly translates to heavy stone. Its name in Swedish is volfram, however, in order to distinguish it from scheelite, which in Swedish is alternatively named tungsten.W66206[2, 8, 18, 32, 12, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d4[Xe] 4f14 5d4 6s278.762.36[770, 1700]2194d6dTungsten rod with oxidised surface, 80 grams. Original size in cm: 1.3 x 3https://upload.wikimedia.org/wikipedia/commons/c/c8/Tungsten_rod_with_oxidised_surface.jpgJurii, CC BY 1.0 <https://creativecommons.org/licenses/by/1.0>, via Wikimedia Commons, source: https://images-of-elements.com/tungsten.php
76Rheniumsilvery-grayish186.20715869.0transition metal21.02Masataka Ogawa3459.025.48Walter Noddack7567Solidhttps://en.wikipedia.org/wiki/Rheniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_075_rhenium/element_075_rhenium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_075_rhenium/element_075_rhenium.glbRhenium is a chemical element with symbol Re and atomic number 75. It is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is one of the rarest elements in the Earth's crust.Re76216[2, 8, 18, 32, 13, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d5[Xe] 4f14 5d5 6s25.82731.9[760, 1260, 2510, 3640]267dabdPure Rhenium Bead, arc melted, 21 grams. Original size in cm: 1.5 x 1.7. Measured radiation dose <0.05 μS/h.https://upload.wikimedia.org/wikipedia/commons/d/d9/Pure_rhenium_bead%2C_arc_melted%2C_21_grams._Original_size_in_cm_-_1.5_x_1.7.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/rhenium.php
77Osmiumsilvery, blue cast190.2335285.0transition metal22.59Smithson Tennant3306.024.77668Solidhttps://en.wikipedia.org/wiki/Osmiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_076_osmium/element_076_osmium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_076_osmium/element_076_osmium.glbOsmium (from Greek osme (ὀσμή) meaning "smell") is a chemical element with symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3.Os86226[2, 8, 18, 32, 14, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d6[Xe] 4f14 5d6 6s2103.992.2[840, 1600]266696dPure Osmium Beadhttps://upload.wikimedia.org/wikipedia/commons/3/3c/Osmium-bead.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/osmium.php
78Iridiumsilvery white192.21734403.0transition metal22.56Smithson Tennant2719.025.17769Solidhttps://en.wikipedia.org/wiki/Iridiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_077_iridium/element_077_iridium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_077_iridium/element_077_iridium.glbIridium is a chemical element with symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium) based on measured density, although calculations involving the space lattices of the elements show that iridium is denser. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. Although only certain molten salts and halogens are corrosive to solid iridium, finely divided iridium dust is much more reactive and can be flammable.Ir96236[2, 8, 18, 32, 15, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d7[Xe] 4f14 5d7 6s2150.942.2[880, 1600]175487dPieces of Pure Iridium, 1 gram. Original size: 0.1 - 0.3 cm eachhttps://upload.wikimedia.org/wikipedia/commons/a/a8/Iridium-2.jpgUnknown authorUnknown author, CC BY 1.0 <https://creativecommons.org/licenses/by/1.0>, via Wikimedia Commons, source: https://images-of-elements.com/iridium.php
79Platinumsilvery white195.08494098.0transition metal21.45Antonio de Ulloa2041.425.8678610Solidhttps://en.wikipedia.org/wiki/Platinumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_078_platinum/element_078_platinum_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_078_platinum/element_078_platinum.glbPlatinum is a chemical element with symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, gray-white transition metal. Its name is derived from the Spanish term platina, which is literally translated into "little silver".Pt106246[2, 8, 18, 32, 17, 1]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1 4f14 5d9[Xe] 4f14 5d9 6s1205.0412.28[870, 1791]d0d0e0dCrystals of Pure Platinum grown by gas phase transporthttps://upload.wikimedia.org/wikipedia/commons/6/68/Platinum_crystals.jpgPeriodictableru, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons
80Goldmetallic yellow196.96656953243.0transition metal19.3Middle East1337.3325.41879611Solidhttps://en.wikipedia.org/wiki/Goldhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_079_gold/element_079_gold_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_079_gold/element_079_gold.glbGold is a chemical element with symbol Au (from Latin:aurum) and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable and ductile metal. Chemically, gold is a transition metal and a group 11 element.Au116256[2, 8, 18, 32, 18, 1]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1 4f14 5d10[Xe] 4f14 5d10 6s1222.7472.54[890.1, 1980]ffd123dUltrapure Gold Leafhttps://upload.wikimedia.org/wikipedia/commons/8/8a/Gold_%2879_Au%29.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/gold.php
81Mercurysilvery200.5923629.88transition metal13.534unknown, before 2000 BCE234.32127.98380612Liquidhttps://en.wikipedia.org/wiki/Mercury (Element)https://storage.googleapis.com/search-ar-edu/periodic-table/element_080_mercury/element_080_mercury_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_080_mercury/element_080_mercury.glbMercury is a chemical element with symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum (/haɪˈdrɑːrdʒərəm/). A heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure; the only other element that is liquid under these conditions is bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature.Hg126266[2, 8, 18, 32, 18, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10[Xe] 4f14 5d10 6s2-48.02.0[1007.1, 1810, 3300]b8b8d0d6 grams pure mercury. Diameter of the inner disc: 2 cmhttps://upload.wikimedia.org/wikipedia/commons/b/be/Hydrargyrum_%2880_Hg%29.jpgHi-Res Images of Chemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/mercury.php
82Thalliumsilvery white204.381746.0post-transition metal11.85William Crookes577.026.3281613Solidhttps://en.wikipedia.org/wiki/Thalliumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_081_thallium/element_081_thallium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_081_thallium/element_081_thallium.glbThallium is a chemical element with symbol Tl and atomic number 81. This soft gray post-transition metal is not found free in nature. When isolated, it resembles tin, but discolors when exposed to air.Tl136276[2, 8, 18, 32, 18, 3]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p1[Xe] 4f14 5d10 6s2 6p136.41.62[589.4, 1971, 2878]a6544dp8 grams pure thallium under argon. Original size in cm: 0.7 x 1.5https://upload.wikimedia.org/wikipedia/commons/5/55/Thallium_%2881_Tl%29.jpgHi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/thallium.php
83Leadmetallic gray207.212022.0post-transition metal11.34Middle East600.6126.6582614Solidhttps://en.wikipedia.org/wiki/Lead_(element)https://storage.googleapis.com/search-ar-edu/periodic-table/element_082_lead/element_082_lead_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_082_lead/element_082_lead.glbLead (/lɛd/) is a chemical element in the carbon group with symbol Pb (from Latin:plumbum) and atomic number 82. Lead is a soft, malleable and heavy post-transition metal. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed to air.Pb146286[2, 8, 18, 32, 18, 4]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p2[Xe] 4f14 5d10 6s2 6p234.42041.87[715.6, 1450.5, 3081.5, 4083, 6640]575961pUltrapure Lead Bead from two sides. Original size in cm: 1.5 x 2https://upload.wikimedia.org/wikipedia/commons/6/63/Lead-2.jpgChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/lead.php
84Bismuthlustrous silver208.9804011837.0post-transition metal9.78Claude François Geoffroy544.725.5283615Solidhttps://en.wikipedia.org/wiki/Bismuthhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_083_bismuth/element_083_bismuth_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_083_bismuth/element_083_bismuth.glbBismuth is a chemical element with symbol Bi and atomic number 83. Bismuth, a pentavalent post-transition metal, chemically resembles arsenic and antimony. Elemental bismuth may occur naturally, although its sulfide and oxide form important commercial ores.Bi156296[2, 8, 18, 32, 18, 5]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3[Xe] 4f14 5d10 6s2 6p390.9242.02[703, 1610, 2466, 4370, 5400, 8520]9e4fb5pBismuth Crystalhttps://upload.wikimedia.org/wikipedia/commons/a/a5/Bismuth-2.jpgJurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/bismuth.php
85Poloniumsilvery209.01235.0post-transition metal9.196Pierre Curie527.026.484616Solidhttps://en.wikipedia.org/wiki/Poloniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_084_polonium/element_084_polonium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_084_polonium/element_084_polonium.glbPolonium is a chemical element with symbol Po and atomic number 84, discovered in 1898 by Marie Curie and Pierre Curie. A rare and highly radioactive element with no stable isotopes, polonium is chemically similar to bismuth and tellurium, and it occurs in uranium ores. Applications of polonium are few.Po166306[2, 8, 18, 32, 18, 6]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p4[Xe] 4f14 5d10 6s2 6p4136.02.0[812.1]ab5c00pThis is only an illustration, not polonium itself. A silvery, radioactive metal, producing so much heat that it gets liquid and ionizes the surrounding airhttps://images-of-elements.com/polonium.jpgChemical ELements A Virtual Museum, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0> source: https://images-of-elements.com/polonium.php
86Astatineunknown, probably metallic210.0610.0metalloid6.35Dale R. Corson575.085617Solidhttps://en.wikipedia.org/wiki/Astatinehttps://storage.googleapis.com/search-ar-edu/periodic-table/element_085_astatine/element_085_astatine_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_085_astatine/element_085_astatine.glbAstatine is a very rare radioactive chemical element with the chemical symbol At and atomic number 85. It occurs on Earth as the decay product of various heavier elements. All its isotopes are short-lived; the most stable is astatine-210, with a half-life of 8.1 hours.At176316[2, 8, 18, 32, 18, 7]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p5[Xe] 4f14 5d10 6s2 6p5233.02.2[899.003]754f45pThis is only an illustration, not astatine itself. Crystals similar to iodine, but darker in color than these, which due to the extreme radioactivity glow blue and evaporate to dark purple gashttps://images-of-elements.com/astatine.jpgChemical ELements A Virtual Museum, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0> source: https://images-of-elements.com/astatine.php
87Radoncolorless gas, occasionally glows green or red in discharge tubes222.0211.5noble gas9.73Friedrich Ernst Dorn202.086618Gashttps://en.wikipedia.org/wiki/Radonhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_086_radon/element_086_radon_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_086_radon/element_086_radon.glbhttps://en.wikipedia.org/wiki/File:Radon_spectrum.pngRadon is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless noble gas, occurring naturally as a decay product of radium. Its most stable isotope, 222Rn, has a half-life of 3.8 days.Rn186326[2, 8, 18, 32, 18, 8]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6[Xe] 4f14 5d10 6s2 6p6-68.02.2[1037]428296pThis is only an illustration, not radon itself. Radon is said to glow red in discharge tubes, although it practically is never used for this, due to its strong radioactivity.https://images-of-elements.com/radon.jpgChemical ELements A Virtual Museum, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0> source: https://images-of-elements.com/radon.php
88Francium223.0950.0alkali metal1.87Marguerite Perey300.08771Solidhttps://en.wikipedia.org/wiki/Franciumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_087_francium/element_087_francium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_087_francium/element_087_francium.glbFrancium is a chemical element with symbol Fr and atomic number 87. It used to be known as eka-caesium and actinium K. It is the second-least electronegative element, behind only caesium. Francium is a highly radioactive metal that decays into astatine, radium, and radon.Fr1717[2, 8, 18, 32, 18, 8, 1]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s1[Rn] 7s146.890.79[380]420066sThis is only an illustration, not francium itself.https://images-of-elements.com/francium.jpgChemical ELements A Virtual Museum, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0> source: https://images-of-elements.com/francium.jpg
89Radiumsilvery white metallic226.02010.0alkaline earth metal5.5Pierre Curie1233.08872Solidhttps://en.wikipedia.org/wiki/Radiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_088_radium/element_088_radium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_088_radium/element_088_radium.glbRadium is a chemical element with symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is almost colorless, but it readily combines with nitrogen (rather than oxygen) on exposure to air, forming a black surface layer of radium nitride (Ra3N2).Ra2727[2, 8, 18, 32, 18, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2[Rn] 7s29.64850.9[509.3, 979]007d00sRadium electroplated on a very small sample of copper foil and covered with polyurethane to prevent reaction with the airhttps://upload.wikimedia.org/wikipedia/commons/b/bb/Radium226.jpggrenadier, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons
90Actinium227.03500.0actinide10.0Friedrich Oskar Giesel1500.027.28973Solidhttps://en.wikipedia.org/wiki/Actiniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_089_actinium/element_089_actinium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_089_actinium/element_089_actinium.glbActinium is a radioactive chemical element with symbol Ac (not to be confused with the abbreviation for an acetyl group) and atomic number 89, which was discovered in 1899. It was the first non-primordial radioactive element to be isolated. Polonium, radium and radon were observed before actinium, but they were not isolated until 1902.Ac31037[2, 8, 18, 32, 18, 9, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 6d1[Rn] 6d1 7s233.771.1[499, 1170]70abfafActinium-225 medical radioisotope held in a v-vial at ORNL. The blue glow comes from the ionization of surrounding air by alpha particleshttps://upload.wikimedia.org/wikipedia/commons/2/27/Actinium_sample_%2831481701837%29.pngOak Ridge National Laboratory, CC BY 2.0 <https://creativecommons.org/licenses/by/2.0>, via Wikimedia Commons, source: https://www.flickr.com/photos/oakridgelab/31481701837/
91Thoriumsilvery, often with black tarnish232.037745061.0actinide11.724Jöns Jakob Berzelius2023.026.239073Solidhttps://en.wikipedia.org/wiki/Thoriumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_090_thorium/element_090_thorium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_090_thorium/element_090_thorium.glbThorium is a chemical element with symbol Th and atomic number 90. A radioactive actinide metal, thorium is one of only two significantly radioactive elements that still occur naturally in large quantities as a primordial element (the other being uranium). It was discovered in 1828 by the Norwegian Reverend and amateur mineralogist Morten Thrane Esmark and identified by the Swedish chemist Jöns Jakob Berzelius, who named it after Thor, the Norse god of thunder.Th41047[2, 8, 18, 32, 18, 10, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 6d2[Rn] 6d2 7s2112.721.3[587, 1110, 1930, 2780]00bafffThorium Metal in Ampoule, corrodedhttps://upload.wikimedia.org/wikipedia/commons/f/f7/Thorium-1.jpgW. Oelen, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons
92Protactiniumbright, silvery metallic luster231.0358824300.0actinide15.37William Crookes1841.0Otto Hahn9173Solidhttps://en.wikipedia.org/wiki/Protactiniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_091_protactinium/element_091_protactinium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_091_protactinium/element_091_protactinium.glbProtactinium is a chemical element with symbol Pa and atomic number 91. It is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. It forms various chemical compounds where protactinium is usually present in the oxidation state +5, but can also assume +4 and even +2 or +3 states.Pa51057[2, 8, 18, 32, 20, 9, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f2 6d1[Rn] 5f2 6d1 7s253.031.5[568]00a1fffThis sample of Protactinium-233 (dark circular area in the photo) was photographed in the light from its own radioactive emission (the lighter area) at the National Reactor Testing Station in Idaho.https://upload.wikimedia.org/wikipedia/commons/a/af/Protactinium-233.jpgENERGY.GOV, Public domain, via Wikimedia Commons
93Uranium238.0289134404.0actinide19.1Martin Heinrich Klaproth1405.327.6659273Solidhttps://en.wikipedia.org/wiki/Uraniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_092_uranium/element_092_uranium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_092_uranium/element_092_uranium.glbUranium is a chemical element with symbol U and atomic number 92. It is a silvery-white metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons.U61067[2, 8, 18, 32, 21, 9, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f3 6d1[Rn] 5f3 6d1 7s250.941.38[597.6, 1420]008ffffA biscuit of uranium metal after reduction via the Ames Process. c.1943.https://upload.wikimedia.org/wikipedia/commons/b/b2/Ames_Process_uranium_biscuit.jpgUnknown authorUnknown author, Public domain, via Wikimedia Commons
94Neptuniumsilvery metallic237.04447.0actinide20.45Edwin McMillan912.029.469373Solidhttps://en.wikipedia.org/wiki/Neptuniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_093_neptunium/element_093_neptunium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_093_neptunium/element_093_neptunium.glbNeptunium is a chemical element with symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element. Its position in the periodic table just after uranium, named after the planet Uranus, led to it being named after Neptune, the next planet beyond Uranus.Np71077[2, 8, 18, 32, 22, 9, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f4 6d1[Rn] 5f4 6d1 7s245.851.36[604.5]0080fffNeptunium 237 sphere (6 kg)https://upload.wikimedia.org/wikipedia/commons/e/e5/Neptunium2.jpgLos Alamos National Laboratory,, Public domain, via Wikimedia Commons
95Plutoniumsilvery white, tarnishing to dark gray in air244.03505.0actinide19.816Glenn T. Seaborg912.535.59473Solidhttps://en.wikipedia.org/wiki/Plutoniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_094_plutonium/element_094_plutonium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_094_plutonium/element_094_plutonium.glbPlutonium is a transuranic radioactive chemical element with symbol Pu and atomic number 94. It is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. The element normally exhibits six allotropes and four oxidation states.Pu81087[2, 8, 18, 32, 24, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f6[Rn] 5f6 7s2-48.331.28[584.7]006bfffPlutonium Ringhttps://upload.wikimedia.org/wikipedia/commons/0/0f/Plutonium_ring.jpgLos Alamos National Laboratory, Attribution, via Wikimedia Commons
96Americiumsilvery white243.02880.0actinide12.0Glenn T. Seaborg1449.062.79573Solidhttps://en.wikipedia.org/wiki/Americiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_095_americium/element_095_americium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_095_americium/element_095_americium.glbhttps://en.wikipedia.org/wiki/File:Americium_spectrum_visible.pngAmericium is a radioactive transuranic chemical element with symbol Am and atomic number 95. This member of the actinide series is located in the periodic table under the lanthanide element europium, and thus by analogy was named after the Americas. Americium was first produced in 1944 by the group of Glenn T.Seaborg from Berkeley, California, at the metallurgical laboratory of University of Chicago.Am91097[2, 8, 18, 32, 25, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f7[Rn] 5f7 7s29.931.13[578]545cf2fA small disc of Am-241 under the microscope.https://upload.wikimedia.org/wikipedia/commons/e/ee/Americium_microscope.jpgBionerd, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons
97Curiumsilvery metallic, glows purple in the dark247.03383.0actinide13.51Glenn T. Seaborg1613.09673Solidhttps://en.wikipedia.org/wiki/Curiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_096_curium/element_096_curium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_096_curium/element_096_curium.glbCurium is a transuranic radioactive chemical element with symbol Cm and atomic number 96. This element of the actinide series was named after Marie and Pierre Curie both were known for their research on radioactivity. Curium was first intentionally produced and identified in July 1944 by the group of Glenn T. Seaborg at the University of California, Berkeley.Cm1010107[2, 8, 18, 32, 25, 9, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f7 6d1[Rn] 5f7 6d1 7s227.171.28[581]785ce3fA piece of curium, which emitts strong radiation that makes it glowhttps://images-of-elements.com/s/curium-glow.jpgEuropean Union, The Actinide Group, Institute for Transuranium Elements (JRC-ITU), source: https://images-of-elements.com/curium.php
98Berkeliumsilvery247.02900.0actinide14.78Lawrence Berkeley National Laboratory1259.09773Solidhttps://en.wikipedia.org/wiki/Berkeliumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_097_berkelium/element_097_berkelium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_097_berkelium/element_097_berkelium.glbBerkelium is a transuranic radioactive chemical element with symbol Bk and atomic number 97. It is a member of the actinide and transuranium element series. It is named after the city of Berkeley, California, the location of the University of California Radiation Laboratory where it was discovered in December 1949.Bk1110117[2, 8, 18, 32, 27, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f9[Rn] 5f9 7s2-165.241.3[601]8a4fe3fIt took 250 days to make enough berkelium, shown here (in dissolved state), to synthesize element 117https://upload.wikimedia.org/wikipedia/commons/f/fc/Berkelium.jpgORNL, Department of Energy, Public domain, via Wikimedia Commons
99Californiumsilvery251.01743.0actinide15.1Lawrence Berkeley National Laboratory1173.09873Solidhttps://en.wikipedia.org/wiki/Californiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_098_californium/element_098_californium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_098_californium/element_098_californium.glbCalifornium is a radioactive metallic chemical element with symbol Cf and atomic number 98. The element was first made in 1950 at the University of California Radiation Laboratory in Berkeley, by bombarding curium with alpha particles (helium-4 ions). It is an actinide element, the sixth transuranium element to be synthesized, and has the second-highest atomic mass of all the elements that have been produced in amounts large enough to see with the unaided eye (after einsteinium).Cf1210127[2, 8, 18, 32, 28, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f10[Rn] 5f10 7s2-97.311.3[608]a136d4fA disc of californium metal (249Cf, 10 mg). The source implies that the disc has a diameter about twice the thickness of a typical pin, or on the order of 1 mmhttps://upload.wikimedia.org/wikipedia/commons/9/93/Californium.jpgUnited States Department of Energy (see File:Einsteinium.jpg), Public domain, via Wikimedia Commons
100Einsteiniumsilver-colored252.01269.0actinide8.84Lawrence Berkeley National Laboratory1133.09973Solidhttps://en.wikipedia.org/wiki/Einsteiniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_099_einsteinium/element_099_einsteinium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_099_einsteinium/element_099_einsteinium.glbEinsteinium is a synthetic element with symbol Es and atomic number 99. It is the seventh transuranic element, and an actinide. Einsteinium was discovered as a component of the debris of the first hydrogen bomb explosion in 1952, and named after Albert Einstein.Es1310137[2, 8, 18, 32, 29, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f11[Rn] 5f11 7s2-28.61.3[619]b31fd4f300 micrograms of Einsteinium 253, which has a half-life of 20 days.https://upload.wikimedia.org/wikipedia/commons/5/55/Einsteinium.jpgHaire, R. G., US Department of Energy.Touched up by Materialscientist at en.wikipedia., Public domain, via Wikimedia Commons
101Fermium257.0actinideLawrence Berkeley National Laboratory1800.010073Solidhttps://en.wikipedia.org/wiki/Fermiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_100_fermium/element_100_fermium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_100_fermium/element_100_fermium.glbFermium is a synthetic element with symbol Fm and atomic number 100. It is a member of the actinide series. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities, although pure fermium metal has not yet been prepared.Fm1410147[2, 8, 18, 32, 30, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f12[Rn] 5f12 7s233.961.3[627]b31fbafFermium was first observed in the fallout from the Ivy Mike nuclear test.https://upload.wikimedia.org/wikipedia/commons/5/58/Ivy_Mike_-_mushroom_cloud.jpgU.S. Department of Energy, Public domain, via Wikimedia Commons
102Mendelevium258.0actinideLawrence Berkeley National Laboratory1100.010173Solidhttps://en.wikipedia.org/wiki/Mendeleviumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_101_mendelevium/element_101_mendelevium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_101_mendelevium/element_101_mendelevium.glbMendelevium is a synthetic element with chemical symbol Md (formerly Mv) and atomic number 101. A metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities through neutron bombardment of lighter elements. It is the antepenultimate actinide and the ninth transuranic element.Md1510157[2, 8, 18, 32, 31, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f13[Rn] 5f13 7s293.911.3[635]b30da6fThis is only an illustration, not mendelevium itself. Chemically similar to Thulium, the highly radioactive heavy metal emits very energetic α-radiation.https://images-of-elements.com/s/mendelevium.jpgChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/mendelevium.php
103Nobelium259.0actinideJoint Institute for Nuclear Research1100.010273Solidhttps://en.wikipedia.org/wiki/Nobeliumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_102_nobelium/element_102_nobelium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_102_nobelium/element_102_nobelium.glbNobelium is a synthetic chemical element with symbol No and atomic number 102. It is named in honor of Alfred Nobel, the inventor of dynamite and benefactor of science. A radioactive metal, it is the tenth transuranic element and is the penultimate member of the actinide series.No1610167[2, 8, 18, 32, 32, 8, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14[Rn] 5f14 7s2-223.221.3[642]bd0d87fThis is only an illustration, not nobelium itself. Nobelium can only be made in very small amounts and emits strong radiation of various kinds.https://images-of-elements.com/nobelium.jpgChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/nobelium.php
104Lawrencium266.0actinideLawrence Berkeley National Laboratory1900.010373Solidhttps://en.wikipedia.org/wiki/Lawrenciumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_103_lawrencium/element_103_lawrencium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_103_lawrencium/element_103_lawrencium.glbLawrencium is a synthetic chemical element with chemical symbol Lr (formerly Lw) and atomic number 103. It is named in honor of Ernest Lawrence, inventor of the cyclotron, a device that was used to discover many artificial radioactive elements. A radioactive metal, lawrencium is the eleventh transuranic element and is also the final member of the actinide series.Lr1710177[2, 8, 18, 32, 32, 8, 3]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 7p1[Rn] 5f14 7s2 7p1-30.041.3[470]c70066dThis is only an illustration, not lawrencium itself. Lawrencium can only be made in very small amounts and emits strong radiationhttps://images-of-elements.com/lawrencium.jpgChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/lawrencium.php
105Rutherfordium267.05800.0transition metal23.2Joint Institute for Nuclear Research2400.010474Solidhttps://en.wikipedia.org/wiki/Rutherfordiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_104_rutherfordium/element_104_rutherfordium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_104_rutherfordium/element_104_rutherfordium.glbRutherfordium is a chemical element with symbol Rf and atomic number 104, named in honor of physicist Ernest Rutherford. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, 267Rf, has a half-life of approximately 1.3 hours. In the periodic table of the elements, it is a d - block element and the second of the fourth - row transition elements.Rf47187[2, 8, 18, 32, 32, 10, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d2[Rn] 5f14 6d2 7s2[580]cc0059dDecay traces in a spark chamber, not of rutherfordium, but of a pion. This is a completely different, unrelated particle, but the decay of rutherfordium would make streaks there, too.https://images-of-elements.com/s/rutherfordium.jpgImage © CERN, Chemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/rutherfordium.php
106Dubnium268.0transition metal29.3Joint Institute for Nuclear Research10575Solidhttps://en.wikipedia.org/wiki/Dubniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_105_dubnium/element_105_dubnium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_105_dubnium/element_105_dubnium.glbDubnium is a chemical element with symbol Db and atomic number 105. It is named after the town of Dubna in Russia (north of Moscow), where it was first produced. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, dubnium-268, has a half-life of approximately 28 hours.Db57197[2, 8, 18, 32, 32, 11, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d3*[Rn] 5f14 6d3 7s2[]d1004fdNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/dubnium.php
107Seaborgium269.0transition metal35.0Lawrence Berkeley National Laboratory10676Solidhttps://en.wikipedia.org/wiki/Seaborgiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_106_seaborgium/element_106_seaborgium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_106_seaborgium/element_106_seaborgium.glbSeaborgium is a synthetic element with symbol Sg and atomic number 106. Its most stable isotope 271Sg has a half-life of 1.9 minutes. A more recently discovered isotope 269Sg has a potentially slightly longer half-life (ca.Sg67207[2, 8, 18, 32, 32, 12, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d4*[Rn] 5f14 6d4 7s2[]d90045dNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/seaborgium.php
108Bohrium270.0transition metal37.1Gesellschaft für Schwerionenforschung10777Solidhttps://en.wikipedia.org/wiki/Bohriumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_107_bohrium/element_107_bohrium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_107_bohrium/element_107_bohrium.glbBohrium is a chemical element with symbol Bh and atomic number 107. It is named after Danish physicist Niels Bohr. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, 270Bh, has a half-life of approximately 61 seconds.Bh77217[2, 8, 18, 32, 32, 13, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d5*[Rn] 5f14 6d5 7s2[]e00038dNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/bohrium.php
109Hassium269.0transition metal40.7Gesellschaft für Schwerionenforschung126.010878Solidhttps://en.wikipedia.org/wiki/Hassiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_108_hassium/element_108_hassium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_108_hassium/element_108_hassium.glbHassium is a chemical element with symbol Hs and atomic number 108, named after the German state of Hesse. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, 269Hs, has a half-life of approximately 9.7 seconds, although an unconfirmed metastable state, 277mHs, may have a longer half-life of about 130 seconds. More than 100 atoms of hassium have been synthesized to date.Hs87227[2, 8, 18, 32, 32, 14, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d6*[Rn] 5f14 6d6 7s2[]e6002edNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/hassium.php
110Meitnerium278.0unknown, probably transition metal37.4Gesellschaft für Schwerionenforschung10979Solidhttps://en.wikipedia.org/wiki/Meitneriumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_109_meitnerium/element_109_meitnerium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_109_meitnerium/element_109_meitnerium.glbMeitnerium is a chemical element with symbol Mt and atomic number 109. It is an extremely radioactive synthetic element (an element not found in nature that can be created in a laboratory). The most stable known isotope, meitnerium-278, has a half-life of 7.6 seconds.Mt97237[2, 8, 18, 32, 32, 15, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d7*[Rn] 5f14 6d7 7s2[]eb0026dNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/meitnerium.php
111Darmstadtium281.0unknown, probably transition metal34.8Gesellschaft für Schwerionenforschung110710Solidhttps://en.wikipedia.org/wiki/Darmstadtiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_110_darmstadtium/element_110_darmstadtium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_110_darmstadtium/element_110_darmstadtium.glbDarmstadtium is a chemical element with symbol Ds and atomic number 110. It is an extremely radioactive synthetic element. The most stable known isotope, darmstadtium-281, has a half-life of approximately 10 seconds.Ds107247[2, 8, 18, 32, 32, 16, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d8*[Rn] 5f14 6d9 7s1[]dNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/darmstadtium.php
112Roentgenium282.0unknown, probably transition metal28.7Gesellschaft für Schwerionenforschung111711Solidhttps://en.wikipedia.org/wiki/Roentgeniumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_111_roentgenium/element_111_roentgenium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_111_roentgenium/element_111_roentgenium.glbRoentgenium is a chemical element with symbol Rg and atomic number 111. It is an extremely radioactive synthetic element (an element that can be created in a laboratory but is not found in nature); the most stable known isotope, roentgenium-282, has a half-life of 2.1 minutes. Roentgenium was first created in 1994 by the GSI Helmholtz Centre for Heavy Ion Research near Darmstadt, Germany.Rg117257[2, 8, 18, 32, 32, 17, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d9*[Rn] 5f14 6d10 7s1151.0[]dNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/roentgenium.php
113Copernicium285.03570.0transition metal14.0Gesellschaft für Schwerionenforschung112712Liquidhttps://en.wikipedia.org/wiki/Coperniciumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_112_copernicium/element_112_copernicium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_112_copernicium/element_112_copernicium.glbCopernicium is a chemical element with symbol Cn and atomic number 112. It is an extremely radioactive synthetic element that can only be created in a laboratory. The most stable known isotope, copernicium-285, has a half-life of approximately 29 seconds, but it is possible that this copernicium isotope may have a nuclear isomer with a longer half-life, 8.9 min.Cn127267[2, 8, 18, 32, 32, 18, 2]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10*[Rn] 5f14 6d10 7s2[]dNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/copernicium.php
114Nihonium286.01430.0unknown, probably transition metal16.0RIKEN700.0113713Solidhttps://en.wikipedia.org/wiki/Ununtriumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_113_nihonium/element_113_nihonium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_113_nihonium/element_113_nihonium.glbNihonium is a chemical element with atomic number 113. It has a symbol Nh. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and is extremely radioactive; its most stable known isotope, nihonium-286, has a half-life of 20 seconds.Nh137277[2, 8, 18, 32, 32, 18, 3]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p1*[Rn] 5f14 6d10 7s2 7p166.6[]pNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/nihonium.php
115Flerovium289.0420.0post-transition metal14.0Joint Institute for Nuclear Research340.0114714Solidhttps://en.wikipedia.org/wiki/Fleroviumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_114_flerovium/element_114_flerovium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_114_flerovium/element_114_flerovium.glbFlerovium is a superheavy artificial chemical element with symbol Fl and atomic number 114. It is an extremely radioactive synthetic element. The element is named after the Flerov Laboratory of Nuclear Reactions of the Joint Institute for Nuclear Research in Dubna, Russia, where the element was discovered in 1998.Fl147287[2, 8, 18, 32, 32, 18, 4]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p2*[Rn] 5f14 6d10 7s2 7p2[]pNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/flerovium.php
116Moscovium289.01400.0unknown, probably post-transition metal13.5Joint Institute for Nuclear Research670.0115715Solidhttps://en.wikipedia.org/wiki/Ununpentiumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_115_moscovium/element_115_moscovium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_115_moscovium/element_115_moscovium.glbMoscovium is the name of a synthetic superheavy element in the periodic table that has the symbol Mc and has the atomic number 115. It is an extremely radioactive element; its most stable known isotope, moscovium-289, has a half-life of only 220 milliseconds. It is also known as eka-bismuth or simply element 115.Mc157297[2, 8, 18, 32, 32, 18, 5]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p3*[Rn] 5f14 6d10 7s2 7p335.3[]pNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/moscovium.php
117Livermorium293.01085.0unknown, probably post-transition metal12.9Joint Institute for Nuclear Research709.0116716Solidhttps://en.wikipedia.org/wiki/Livermoriumhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_116_livermorium/element_116_livermorium_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_116_livermorium/element_116_livermorium.glbLivermorium is a synthetic superheavy element with symbol Lv and atomic number 116. It is an extremely radioactive element that has only been created in the laboratory and has not been observed in nature. The element is named after the Lawrence Livermore National Laboratory in the United States, which collaborated with the Joint Institute for Nuclear Research in Dubna, Russia to discover livermorium in 2000.Lv167307[2, 8, 18, 32, 32, 18, 6]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p4*[Rn] 5f14 6d10 7s2 7p474.9[]pNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/livermorium.php
118Tennessine294.0883.0unknown, probably metalloid7.17Joint Institute for Nuclear Research723.0117717Solidhttps://en.wikipedia.org/wiki/Tennessinehttps://storage.googleapis.com/search-ar-edu/periodic-table/element_117_tennessine/element_117_tennessine_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_117_tennessine/element_117_tennessine.glbTennessine is a superheavy artificial chemical element with an atomic number of 117 and a symbol of Ts. Also known as eka-astatine or element 117, it is the second-heaviest known element and penultimate element of the 7th period of the periodic table. As of 2016, fifteen tennessine atoms have been observed:six when it was first synthesized in 2010, seven in 2012, and two in 2014.Ts177317[2, 8, 18, 32, 32, 18, 7]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p5*[Rn] 5f14 6d10 7s2 7p5165.9[]pNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/tenessine.php
119Oganesson294.0350.0unknown, predicted to be noble gas4.95Joint Institute for Nuclear Research118718Solidhttps://en.wikipedia.org/wiki/Oganessonhttps://storage.googleapis.com/search-ar-edu/periodic-table/element_118_oganesson/element_118_oganesson_srp_th.pnghttps://storage.googleapis.com/search-ar-edu/periodic-table/element_118_oganesson/element_118_oganesson.glbOganesson is IUPAC's name for the transactinide element with the atomic number 118 and element symbol Og. It is also known as eka-radon or element 118, and on the periodic table of the elements it is a p-block element and the last one of the 7th period. Oganesson is currently the only synthetic member of group 18.Og187327[2, 8, 18, 32, 32, 18, 8]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p6*[Rn] 5f14 6d10 7s2 7p65.40318[]pNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/oganesson.php
120Ununennium315.0630.0unknown, but predicted to be an alkali metal3.0GSI Helmholtz Centre for Heavy Ion Research11981Solidhttps://en.wikipedia.org/wiki/UnunenniumUnunennium, also known as eka-francium or simply element 119, is the hypothetical chemical element with symbol Uue and atomic number 119. Ununennium and Uue are the temporary systematic IUPAC name and symbol respectively, until a permanent name is decided upon. In the periodic table of the elements, it is expected to be an s-block element, an alkali metal, and the first element in the eighth period.Uue1818[2, 8, 18, 32, 32, 18, 8, 1]1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p6 8s1*[Uuo] 8s163.87[]sNo Image Foundhttps://images-of-elements.com/s/transactinoid.pngChemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com