Periodic Table 1.008 Hydrogen H 1 6.940 22.990 39.098 85.468 132.905 9.012 24.305 40.078 137.327 Lithium Sodium Potassium Rubidium Cesium Francium Beryllium Magnesium Calcium Strontium Barium Radium 3 11 19 37 55 87 4 12 20 38 56 88 Li Na K Rb Cs Fr Be Mg Ca Sr 87.62 Ba Ra 12.011 Carbon 6 C [223] [226] 138.905 Lanthanum Actinium 57 89 La Ac [227] 140.116 Cerium Thorium 58 90 Ce Th 232.038 140.908 Praseodymium Protactinium 59 91 Pr Pa 231.036 144.242 Neodymium Uranium 60 92 Nd U 238.029 [145] Promethium Neptunium 61 93 Pm Np [237] 150.36 Samarium Plutonium 62 94 Sm Pu [244] 151.964 Europium Americium 63 95 Eu Am [243] 157.25 Gadolinium Curium 64 96 Gd Cm [247] 158.925 Terbium Berkelium 65 97 Tb Bk [247] 162.500 Dysprosium Californium 66 98 Dy Cf [251] 164.930 Holmium Einsteinium 67 99 Ho Es [252] 167.259 Erbium Fermium 68 100 Er Fm [257] 168.934 Thulium Mendelevium 69 101 Tm Md [258] 173.045 Ytterbium Nobelium 70 102 Yb No [259] *Lanthanide series **Actinide series 57 - 70 89 - 102 Atomic Number Symbol Name Average Atomic Mass 10.810 26.982 69.723 114.818 204.38 12.011 28.085 72.630 118.710 207.2 14.007 30.974 74.922 121.760 208.980 15.999 32.06 78.97 127.60 [209] 18.998 35.45 79.904 126.904 [210] 20.180 4.003 39.948 83.798 131.293 [222] 44.956 88.906 174.967 47.867 91.224 178.49 50.942 92.906 180.948 51.996 95.95 183.84 54.938 [97] 186.207 55.845 101.07 190.23 58.933 102.906 192.217 58.693 106.42 195.084 63.546 107.868 196.997 65.38 112.414 200.592 Boron Aluminum Gallium Indium Thallium Carbon Silicon Germanium Tin Lead Flerovium Nitrogen Phosphorus Arsenic Antimony Bismuth Oxygen Sulfur Selenium Tellurium Polonium Fluorine Chlorine Bromine Iodine Astatine Neon Helium Argon Krypton Xenon Radon Scandium Yttrium Lutetium Lawrencium Titanium Zirconium Hafnium Rutherfordium Vanadium Niobium Tantalum Dubnium Chromium Molybdenum Tungsten Seaborgium Manganese Technetium Rhenium Bohrium Iron Ruthenium Osmium Hassium Cobalt Rhodium Iridium Meitnerium Nickel Palladium Platinum Darmstadtium Copper Silver Gold Roentgenium Zinc Cadmium Mercury Copernicium 5 13 31 49 81 6 14 32 50 82 114 7 15 33 51 83 8 16 34 52 84 9 17 35 53 85 10 2 18 36 54 86 21 39 71 103 22 40 72 104 23 41 73 105 24 42 74 106 25 43 75 107 26 44 76 108 27 45 77 109 28 46 78 110 29 47 79 111 30 48 80 112 B Al Ga In Tl C Si Ge Sn Pb Fl N P As Sb Bi O S Se Te Po F Cl Br I At Ne He Ar Kr Xe Rn [289] [293] [293] [294] Moscovium Livermorium Tennessine Oganesson 115 116 117 118 Mc Lv Ts Og Sc Y Lu Lr Ti Zr Hf Rf V Nb Ta Db Cr Mo W Sg Mn Tc Re Bh Fe Ru Os Hs Co Rh Ir Mt Ni Pd Pt Ds Cu Ag Au Rg Zn Cd Hg Cn [289] [262] [267] [270] [269] [270] [270] [278] [281] [281] [285] Nihonium 113 Nh [286] PromethiumSamariumEuropiumGadoliniumTerbiumDysprosiumHolmiumErbiumThuliumYtterbiumLutetiumHafniumTantalumTungstenRheniumOsmiumIridiumPlatinumGoldMercuryThalliumLeadBismuthPoloniumAstatineRadonFranciumRadiumActiniumThorium HydrogenHeliumLithiumBerylliumBoronCarbonNitrogenOxygenFluorineNeonSodiumMagnesiumAluminumSiliconPhosphorusSulfurChlorineArgonPotassiumCalciumScandiumTitaniumVanadiumChromiumManganeseIronCobaltNickelCopperZinc ProtactiniumUraniumNeptuniumPlutoniumAmericiumCuriumBerkeliumCaliforniumEinsteiniumFermiumMendeleviumNobeliumLawrenciumRutherfordiumDubniumSeaborgiumBohriumHassiumMeitneriumDarmstadtiumRoentgeniumCoperniciumNihoniumFleroviumMoscoviumLivermoriumTennessineOganesson GalliumGermaniumArsenicSeleniumBromineKryptonRubidiumStrontiumYttriumZirconiumNiobiumMolybdenumTechnetiumRutheniumRhodiumPalladiumSilverCadmiumIndiumTinAntimonyTelluriumIodineXenonCesiumBariumLanthanumCeriumPraseodymiumNeodymium
