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Periodic table

The 118 recognized elements. Each cell opens an entry. Dates, laboratories, and names come from the same source as the timelines: a disputed discovery is not rewritten as a certainty.

Timeline of discoveries, isolations, and syntheses →

Families
Known by

At a chosen year, an element is shown if it is marked known since antiquity or the Middle Ages, or if a confirmed, jointly credited, or official observation, discovery, identification, isolation, or synthesis has a year on or before that date. A claim that is only claimed, disputed, or rejected does not count. A name alone does not count either.

57–7189–103

Lanthanides

Actinides

1HHydrogen1.0082HeHelium4.0026023LiLithium6.944BeBeryllium9.0121835BBoron10.816CCarbon12.0117NNitrogen14.0078OOxygen15.9999FFluorine18.99840310NeNeon20.1797611NaSodium22.98976912MgMagnesium24.30513AlAluminium26.98153914SiSilicon28.08515PPhosphorus30.97376216SSulfur32.0617ClChlorine35.4518ArArgon39.948119KPotassium39.0983120CaCalcium40.078421ScScandium44.95590922TiTitanium47.867123VVanadium50.9415124CrChromium51.9961625MnManganese54.93804426FeIron55.845227CoCobalt58.93319428NiNickel58.6934429CuCopper63.546330ZnZinc65.38231GaGallium69.723132GeGermanium72.630833AsArsenic74.92159634SeSelenium78.971835BrBromine79.90436KrKrypton83.798237RbRubidium85.4678338SrStrontium87.62139YYttrium88.90584240ZrZirconium91.224241NbNiobium92.90637242MoMolybdenum95.95143TcTechnetium[98]44RuRuthenium101.07245RhRhodium102.90550246PdPalladium106.42147AgSilver107.8682248CdCadmium112.414449InIndium114.818150SnTin118.710751SbAntimony121.760152TeTellurium127.60353IIodine126.90447354XeXenon131.293655CsCaesium132.90545256BaBarium137.327757LaLanthanum138.90547758CeCerium140.116159PrPraseodymium140.90766260NdNeodymium144.242361PmPromethium[145]62SmSamarium150.36263EuEuropium151.964164GdGadolinium157.25365TbTerbium158.92535266DyDysprosium162.500167HoHolmium164.93033268ErErbium167.259369TmThulium168.93422270YbYtterbium173.045171LuLutetium174.9668172HfHafnium178.49273TaTantalum180.94788274WTungsten183.84175ReRhenium186.207176OsOsmium190.23377IrIridium192.217378PtPlatinum195.084979AuGold196.9665780HgMercury200.592381TlThallium204.3882PbLead207.2183BiBismuth208.98040184PoPolonium[209]85AtAstatine[210]86RnRadon[222]87FrFrancium[223]88RaRadium[226]89AcActinium[227]90ThThorium232.0377491PaProtactinium231.03588292UUranium238.02891393NpNeptunium[237]94PuPlutonium[244]95AmAmericium[243]96CmCurium[247]97BkBerkelium[247]98CfCalifornium[251]99EsEinsteinium[252]100FmFermium[257]101MdMendelevium[258]102NoNobelium[259]103LrLawrencium[266]104RfRutherfordium[267]105DbDubnium[268]106SgSeaborgium[269]107BhBohrium[270]108HsHassium[269]109MtMeitnerium[278]110DsDarmstadtium[281]111RgRoentgenium[282]112CnCopernicium[285]113NhNihonium[286]114FlFlerovium[289]115McMoscovium[289]116LvLivermorium[293]117TsTennessine[294]118OgOganesson[294]

Index of the 118 elements

  1. 1 Hydrogen H nonmetal
  2. 2 Helium He noble gas
  3. 3 Lithium Li alkali metal
  4. 4 Beryllium Be alkaline earth metal
  5. 5 Boron B metalloid
  6. 6 Carbon C nonmetal
  7. 7 Nitrogen N nonmetal
  8. 8 Oxygen O nonmetal
  9. 9 Fluorine F halogen
  10. 10 Neon Ne noble gas
  11. 11 Sodium Na alkali metal
  12. 12 Magnesium Mg alkaline earth metal
  13. 13 Aluminium Al post-transition metal
  14. 14 Silicon Si metalloid
  15. 15 Phosphorus P nonmetal
  16. 16 Sulfur S nonmetal
  17. 17 Chlorine Cl halogen
  18. 18 Argon Ar noble gas
  19. 19 Potassium K alkali metal
  20. 20 Calcium Ca alkaline earth metal
  21. 21 Scandium Sc transition metal
  22. 22 Titanium Ti transition metal
  23. 23 Vanadium V transition metal
  24. 24 Chromium Cr transition metal
  25. 25 Manganese Mn transition metal
  26. 26 Iron Fe transition metal
  27. 27 Cobalt Co transition metal
  28. 28 Nickel Ni transition metal
  29. 29 Copper Cu transition metal
  30. 30 Zinc Zn transition metal
  31. 31 Gallium Ga post-transition metal
  32. 32 Germanium Ge metalloid
  33. 33 Arsenic As metalloid
  34. 34 Selenium Se nonmetal
  35. 35 Bromine Br halogen
  36. 36 Krypton Kr noble gas
  37. 37 Rubidium Rb alkali metal
  38. 38 Strontium Sr alkaline earth metal
  39. 39 Yttrium Y transition metal
  40. 40 Zirconium Zr transition metal
  41. 41 Niobium Nb transition metal
  42. 42 Molybdenum Mo transition metal
  43. 43 Technetium Tc transition metal
  44. 44 Ruthenium Ru transition metal
  45. 45 Rhodium Rh transition metal
  46. 46 Palladium Pd transition metal
  47. 47 Silver Ag transition metal
  48. 48 Cadmium Cd transition metal
  49. 49 Indium In post-transition metal
  50. 50 Tin Sn post-transition metal
  51. 51 Antimony Sb metalloid
  52. 52 Tellurium Te metalloid
  53. 53 Iodine I halogen
  54. 54 Xenon Xe noble gas
  55. 55 Caesium Cs alkali metal
  56. 56 Barium Ba alkaline earth metal
  57. 57 Lanthanum La lanthanide
  58. 58 Cerium Ce lanthanide
  59. 59 Praseodymium Pr lanthanide
  60. 60 Neodymium Nd lanthanide
  61. 61 Promethium Pm lanthanide
  62. 62 Samarium Sm lanthanide
  63. 63 Europium Eu lanthanide
  64. 64 Gadolinium Gd lanthanide
  65. 65 Terbium Tb lanthanide
  66. 66 Dysprosium Dy lanthanide
  67. 67 Holmium Ho lanthanide
  68. 68 Erbium Er lanthanide
  69. 69 Thulium Tm lanthanide
  70. 70 Ytterbium Yb lanthanide
  71. 71 Lutetium Lu lanthanide
  72. 72 Hafnium Hf transition metal
  73. 73 Tantalum Ta transition metal
  74. 74 Tungsten W transition metal
  75. 75 Rhenium Re transition metal
  76. 76 Osmium Os transition metal
  77. 77 Iridium Ir transition metal
  78. 78 Platinum Pt transition metal
  79. 79 Gold Au transition metal
  80. 80 Mercury Hg transition metal
  81. 81 Thallium Tl post-transition metal
  82. 82 Lead Pb post-transition metal
  83. 83 Bismuth Bi post-transition metal
  84. 84 Polonium Po post-transition metal
  85. 85 Astatine At halogen
  86. 86 Radon Rn noble gas
  87. 87 Francium Fr alkali metal
  88. 88 Radium Ra alkaline earth metal
  89. 89 Actinium Ac actinide
  90. 90 Thorium Th actinide
  91. 91 Protactinium Pa actinide
  92. 92 Uranium U actinide
  93. 93 Neptunium Np actinide
  94. 94 Plutonium Pu actinide
  95. 95 Americium Am actinide
  96. 96 Curium Cm actinide
  97. 97 Berkelium Bk actinide
  98. 98 Californium Cf actinide
  99. 99 Einsteinium Es actinide
  100. 100 Fermium Fm actinide
  101. 101 Mendelevium Md actinide
  102. 102 Nobelium No actinide
  103. 103 Lawrencium Lr actinide
  104. 104 Rutherfordium Rf transition metal
  105. 105 Dubnium Db transition metal
  106. 106 Seaborgium Sg transition metal
  107. 107 Bohrium Bh transition metal
  108. 108 Hassium Hs transition metal
  109. 109 Meitnerium Mt classification unsettled
  110. 110 Darmstadtium Ds classification unsettled
  111. 111 Roentgenium Rg classification unsettled
  112. 112 Copernicium Cn transition metal
  113. 113 Nihonium Nh classification unsettled
  114. 114 Flerovium Fl post-transition metal
  115. 115 Moscovium Mc classification unsettled
  116. 116 Livermorium Lv classification unsettled
  117. 117 Tennessine Ts classification unsettled
  118. 118 Oganesson Og classification unsettled