1 Periodic Table of the Elements H Hydrogen 1.008 Li Lithium 6.941 11 Na Sodium 22.990 19 K Potassium 39.098 37 Rb Rubidium 85.468 55 Cs Cesium 132.905 87 Fr Francium 223.020 Be Beryllium Magnesium 40.078 38 Sr Strontium 87.62 56 Ba 22 Sc Scandium 44.956 39 Ti 40 Y Yttrium Zr 92.906 Ta Hafnium 89-103 Rf Radium Rutherfordium 226.025 [261] 57 La Lanthanum 138.905 89 Ac Actinium 227.028 Technetium Ruthenium 74 75 76 58 Ce Cerium 140.116 90 Th Thorium 232.038 14 Al [266] Praseodymium 140.908 91 Pa Hassium 60 61 Neodymium Promethium 92 93 Nd 144.242 Protactinium 231.036 Alkaline Earth U Uranium 238.029 Pm Sm Samarium 144.913 Np 150.36 94 Neptunium 237.048 Transition Metal [268] 62 Basic Metal Pu Plutonium 244.064 Au Darmstadtium [269] 63 Eu Europium 151.964 95 Am Americium 243.061 Semimetal Mercury 196.967 Ds 200.592 Roentgenium Copernicium 65 66 [272] Gd Gadolinium 157.25 96 Cm Curium 247.070 162.500 97 Bk 98 Berkelium Halogen 247.070 Noble Gas Fl Cf Californium 251.080 [289] 67 Ho Holmium 164.930 99 Es [254] Lanthanide [208.982] Livermorium 69 70 167.259 Fm Fermium Actinide 257.095 101 Md Mendelevium 258.1 I Xe Xenon 131.294 86 Rn Radon 222.018 117 [298] 168.934 54 209.987 Lv Thulium 84.798 Astatine Moscovium 100 Einsteinium Polonium 118 Ts Og Tennessine Oganesson unknown Yb Ytterbium 173.055 102 No Nobelium 259.101 Kr Krypton At 116 Erbium 36 85 Po Tm 39.948 126.904 115 Er Argon Iodine 84 unknown 68 53 127.6 Mc Flerovium unknown Dysprosium 158.925 114 Ar 79.904 Tellurium 208.980 Cl Bromine Te Bi 18 Br 52 Bismuth 207.2 Nihonium Dy Terbium Lead Nh [277] 83 Pb 113 Cn Tb Tl 204.383 112 Rg 82 20.180 35 78.972 121.760 Neon 35.453 Selenium Antimony Ne Chlorine Se Sb 118.711 S 34 51 Tin 17 32.066 74.922 F 18.998 Sulfur Arsenic Sn Thallium 111 64 Nonmetal 81 Hg Gold 110 Meitnerium [269] Pt 80 P As 50 114.818 16 10 Fluorine 15.999 33 72.631 In Oxygen 30.974 Germanium O Phosphorus Ge Indium 112.411 79 195.085 Mt Cadmium 107.868 Platinum 109 Hs [264] Ir 192.217 108 Bohrium 78 Cd Silver 106.42 Iridium 190.23 Bh Seaborgium Pr Osmium 107 Sg 59 Os 186.207 Palladium 102.906 77 Ag 49 Si 32 69.723 48 15 28.086 Gallium 65.38 47 Pd Rhodium 101.07 63.546 46 Rh Zinc N 14.007 Silicon Ga Nitrogen 12.011 31 Zn Copper 58.693 45 Ru Rhenium 106 [262] Alkali Metal Re 183.84 Dubnium Tc 98.907 Tungsten Db 44 30 Cu Nickel 58.933 Molybdenum W 105 55.845 29 Ni Cobalt 43 180.948 104 Iron 54.938 28 Co 42 Tantalum 178.49 27 Fe Manganese 95.95 73 26 Mn Mo Niobium Hf Cr 51.996 Nb 72 25 Chromium 41 91.224 57-71 V 50.942 Zirconium 88.906 24 Vanadium 47.867 137.328 Ra 23 Titanium Barium 88 Carbon 26.982 21 C Aluminum 24.305 Calcium B 13 Mg Ca 4.003 10.811 12 He Helium Boron 9.012 20 unknown 71 Lu Lutetium 174.967 103 Lr Lawrencium [262]