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 Es Einsteinium 257.10 Fm Fermium 258.10 Md Mendelevium 259.10 No Nobelium 262 Lr Lawrencium 261 Rf Rutherfordium 262 Db Dubnium 266 Sg Seaborgium 264 Bh Bohrium 269 Hs Hassium 278 Mt Meitnerium 281 Ds Darmstadtium 280 Rg Roentgenium 285 Cn Copernicum 286 Nh Nihonium 289 Fl Flerovium 289 Mc Moscovium 293 Lv Livermorium 294 Ts Tennessine 294 Og Oganesson