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Periodic Table and Atomic Weights Periodic Table of the Elements Atomic Number 28 Group 18 1 Symbol Ni 1 2 2 Name Nickel 1 H He Hydrogen Helium 13 14 15 16 17 Atomic Mass 58.69 1.00794 4.00260 3 4 5 6 7 8 9 10 2 Li Be B C N O F Ne Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon 6.941 9.01218 10.81 12.0111 14.0067 15.9994 18.998403 20.179 11 12 13 14 15 16 17 18 3 Na Mg Al Si P S Cl Ar Sodium Magnesium Aluminum Silicon Phosphorus Sulfur Chlorine Argon 3 4 5 6 7 8 9 10 11 12 22.98977 24.305 26.98154 28.0855 30.97376 32.06 35.453 39.948 Period 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton 39.0983 40.08 44.9559 47.88 50.9415 51.996 54.9380 55.847 58.9332 58.69 63.546 65.39 69.72 72.59 74.9216 78.96 79.904 83.80 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon 85.4678 87.62 88.9059 91.224 92.9064 95.94 (98) 101.07 102.906 106.42 107.868 112.41 114.82 118.71 121.75 127.60 126.905 131.29 55 56 57-71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 6 Cs Ba Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Caesium Barium Lanthanoids Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury Thallium Lead Bismuth Polonium Astatine Radon 132.905 137.33 178.49 180.948 183.85 186.207 190.2 192.22 195.08 196.967 200.59 204.383 207.2 208.980 (209) (210) (222) 87 88 89-103 104 105 106 107 108 109 110 111 7 Fr Ra Rf Db Sg Bh Hs Mt Ds Rg Francium Radium Actinoids Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium (223) 226.025 (261) (262) (266) (264) (277) (268) (271) (272) Metals Nonmetals 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium 138.906 140.12 140.908 144.24 (145) 150.36 151.96 157.25 158.925 162.50 164.930 167.26 168.934 173.04 174.967 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium 227.028 232.038 231.036 238.029 237.048 (244) (243) (247) (247) (251) (252) (257) (258) (259) (262) International Atomic Weights: Based on the Atomic Mass of 12C = 12 Name Symbol Atomic Atomic Name Symbol Atomic Atomic Number Weight Number Weight Actinium Ac 89 227.028 Mendelevium Md 101 (258) Aluminum Al 13 26.98154 Mercury Hg 80 200.59 Americium Am 95 (243) Molybdenum Mo 42 95.94 Antimony Sb 51 121.75 Neodymium Nd 60 144.24 Argon Ar 18 39.948 Neon Ne 10 20.179 Arsenic As 33 74.9216 Neptunium Np 93 237.048 Astatine At 85 (210) Nickel Ni 28 58.69 Barium Ba 56 137.33 Niobium Nb 41 92.9064 Berkelium Bk 97 (247) Nitrogen N 7 14.0067 Beryllium Be 4 9.01218 Nobelium No 102 (259) Bismuth Bi 83 208.980 Osmium Os 76 190.2 Bohrium Bh 107 (264) Oxygen O 8 15.9994 Boron B 5 10.81 Palladium Pd 46 106.42 Bromine Br 35 79.904 Phosphorus P 15 30.97376 Cadmium Cd 48 112.41 Platinum Pt 78 195.08 Caesium Cs 55 132.905 Plutonium Pu 94 (244) Calcium Ca 20 40.08 Polonium Po 84 (209) Californium Cf 98 (251) Potassium K 19 39.0983 Carbon C 6 12.0111 Praseodymium Pr 59 140.908 Cerium Ce 58 140.12 Promethium Pm 61 (145) Chlorine Cl 17 35.453 Protactinium Pa 91 231.036 Chromium Cr 24 51.996 Radium Ra 88 226.025 Cobalt Co 27 58.9332 Radon Rn 86 (222) Copper Cu 29 63.546 Rhenium Re 75 186.207 Curium Cm 96 (247) Rhodium Rh 45 102.906 Dubnium Db 105 (262) Roentgenium Rg 111 (272) Darmstadtium Ds 110 (271) Rubidium Rb 37 85.4678 Dysprosium Dy 66 162.50 Ruthenium Ru 44 101.07 Einsteinium Es 99 (252) Rutherfordium Rf 104 (261) Erbium Er 68 167.26 Samarium Sm 62 150.36 Europium Eu 63 151.96 Scandium Sc 21 44.9559 Fermium Fm 100 (257) Seaborgium Sg 106 (266) Fluorine F 9 18.998403 Selenium Se 34 78.96 Francium Fr 87 (223) Silicon Si 14 28.0855 Gadolinium Gd 64 157.25 Silver Ag 47 107.868 Gallium Ga 31 69.72 Sodium Na 11 22.98977 Germanium Ge 32 72.59 Strontium Sr 38 87.62 Gold Au 79 196.967 Sulfur S 16 32.06 Hafnium Hf 72 178.49 Tantalum Ta 73 180.948 Hassium Hs 108 (277) Technetium Tc 43 (98) Helium He 2 4.00260 Tellurium Te 52 127.60 Holmium Ho 67 164.930 Terbium Tb 65 158.925 Hydrogen H 1 1.00794 Thallium Tl 81 204.383 Indium In 49 114.82 Thorium Th 90 232.038 Iodine I 53 126.905 Thulium Tm 69 168.934 Iridium Ir 77 192.22 Tin Sn 50 118.71 Iron Fe 26 55.847 Titanium Ti 22 47.88 Krypton Kr 36 83.80 Tungsten W 74 183.85 Lanthanum La 57 138.906 Uranium U 92 238.029 Lawrencium Lr 103 (262) Vanadium V 23 50.9415 Lead Pb 82 207.2 Xenon Xe 54 131.29 Lithium Li 3 6.941 Ytterbium Yb 70 173.04 Lutetium Lu 71 174.967 Yttrium Y 39 88.9059 Magnesium Mg 12 24.305 Zinc Zn 30 65.39 Manganese Mn 25 54.9380 Zirconium Zr 40 91.224 Meitnerium Mt 109 (268).
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