1.01 H Hydrogen 4.00 He Helium 6.94 Li Lithium 9.01 Be Beryllium 10.81 B Boron 12.01 C Carbon 14.01 N Nitrogen 16.00 O Oxygen 19.00 F Fluorine 20.18 Ne Neon 22.99 Na Sodium 24.31 Mg Magnesium 26.98 Al Aluminum 28.09 Si Silicon 30.98 P Phosphorus 32.07 S Sulfur 35.45 Cl Chlorine 39.95 Ar Argon 39.10 K Potassium 40.08 Ca Calcium 44.96 Sc Scandium 47.87 Ti Titanium 50.94 V Vanadium 52.00 Cr Chromium 54.94 Mn Manganese 55.85 Fe Iron 58.93 Co Cobalt 58.69 Ni Nickel 63.55 Cu Copper 65.41 Zn Zinc 69.72 Ga Gallium 72.64 Ge Germanium 74.92 As Arsenic 78.96 Se Selenium 79.90 Br Bromine 83.80 Kr Krypton 85.47 Rb Rubidium 87.62 Sr Strontium 88.91 Y Yttrium 91.22 Zr Zirconium 92.91 Nb Niobium 95.94 Mo Molybdenum 98.91 Tc Technetium 101.07 Ru Ruthenium 102.91 Rh Rhodium 106.42 Pd Palladium 107.87 Ag Silver 112.41 Cd Cadmium 114.82 In Indium 118.71 Sn Tin 121.76 Sb Antimony 127.60 Te Tellurium 126.90 I Iodine 131.29 Xe Xenon 132.91 Cs Cesium 137.33 Ba Barium 138.91 La Lanthanum 140.12 Ce Cerium 140.91 Pr Praseodymium 144.24 Nd Neodymium 144.91 Pm Promethium 150.36 Sm Samarium 151.96 Eu Europium 157.25 Gd Gadolinium 158.93 Tb Terbium 162.50 Dy Dysprosium 164.93 Ho Holmium 167.26 Er Erbium 168.93 Tm Thulium 173.04 Yb Ytterbium 174.97 Lu Lutetium 178.49 Hf Hafnium 180.95 Ta Tantalum 183.84 W Tungsten 186.21 Re Rhenium 190.23 Os Osmium 192.22 Ir Iridium 195.08 Pt Platinum 196.97 Au Gold 200.59 Hg Mercury 204.38 Tl Thallium 207.20 Pb Lead 208.98 Bi Bismuth 209.00 Po Polonium 219.99 At Astatine 222.02 Rn Radon 223.02 Fr Francium 226.03 Ra Radium 227.03 Ac Actinium 232.04 Th Thorium 231.04 Pa Protactinium 238.03 U Uranium 237.05 Np Neptunium 244.06 Pu Plutonium 243.06 Am Americium 247.07 Cm Curium 247.07 Bk Berkelium 251.08 Cf Californium 252.08 Es Einsteinium 257.10 Fm Fermium 258.10 Md Mendelevium 259.10 No Nobelium 262.11 Lr Lawrencium 267.18 Rf Rutherfordium 268.13 Db Dubnium 271.13 Sg Seaborgium 272.14 Bh Bohrium 270.13 Hs Hassium 276.15 Mt Meitnerium 281.16 Ds Darmstadtium 280.17 Rg Roentgenium 285.18 Cn Copernicum 284.18 Nh Nihonium 289.19 Fl Flerovium 288.19 Mc Moscovium 293.20 Lv Livermorium 292.21 Ts Tennessine 294.21 Og Oganesson