Elements Listed by Atomic Mass
Name Sym Atomic Mass
Darmstadtium Ds [281]
Roentgenium Rg [272]
Hassium Hs [269]
Meitnerium Mt [268]
Seaborgium Sg [266]
Bohrium Bh [264]
Dubnium Db [262]
Lawrencium Lr [262]
Rutherfordium Rf [261]
Nobelium No [259]
Mendelevium Md [258]
Fermium Fm [257]
Einsteinium Es [252]
Californium Cf [251]
Berkelium Bk [247]
Curium Cm [247]
Plutonium Pu [244]
Americium Am [243]
Uranium U 238.02891(3)
Neptunium Np [237]
Thorium Th 232.0381
Protactinium Pa 231.03588
Actinium Ac [227]
Radium Ra [226]
Francium Fr [223]
Radon Rn [222]
Astatine At [210]
Polonium Po [209]
Bismuth Bi 208.98038(2)
Lead Pb 207.2(1)
Thallium Tl 204.3833
Mercury Hg 200.59
Gold Au 196.96655
Platinum Pt 195.078
Iridium Ir 192.217(3)
Osmium Os 190.23(3)
Rhenium Re 186.207(1)
Tungsten W 183.84
Tantalum Ta 180.9479
Hafnium Hf 178.49
Lutetium Lu 174.967(1)
Ytterbium Yb 173.04(3)
Thulium Tm 168.93421
Erbium Er 167.259(3)
Holmium Ho 164.93032
Dysprosium Dy 162.500(1)
Terbium Tb 158.92534
Gadolinium Gd 157.25
Europium Eu 151.964(1)
Samarium Sm 150.36
Promethium Pm [145]
Neodymium Nd 144.24
Praseodymium Pr 140.90765(2)
Cerium Ce 140.116
Lanthanum La 138.9055(2)
Barium Ba 137.327(7)
Caesium Cs 132.90545
Xenon Xe 131.293(6)
Tellurium Te 127.60
Iodine I 126.90447(3)
Antimony Sb 121.760(1)
Tin Sn 118.710
Indium In 114.818(3)
Cadmium Cd 112.411
Silver Ag 107.8682
Palladium Pd 106.42(1)
Rhodium Rh 102.90550(2)
Ruthenium Ru 101.07(2)
Technetium Tc [98]
Molybdenum Mo 95.94
Niobium Nb 92.90638
Zirconium Zr 91.224(2)
Yttrium Y 88.90585(2)
Strontium Sr 87.62
Rubidium Rb 85.4678(3)
Krypton Kr 83.798
Bromine Br 79.904
Selenium Se 78.96
Arsenic As 74.92160(2)
Germanium Ge 72.64
Gallium Ga 69.723
Copper Cu 63.546
Zinc Zn 65.409(4)
Cobalt Co 58.933200
Nickel Ni 58.6934
Iron Fe 55.845(2)
Manganese Mn 54.938049
Chromium Cr 51.9961
Vanadium V 50.9415(1)
Titanium Ti 47.867
Scandium Sc 44.955910
Calcium Ca 40.078
Argon Ar 39.948(1)
Potassium K 39.0983
Chlorine Cl 35.453
Sulfur S 32.065
Phosphorus P 30.973761
Silicon Si 28.0855
Aluminium Al 26.981538(2)
Magnesium Mg 24.3050
Sodium Na 22.989770
Neon Ne 20.1797
Fluorine F 18.9984032(5)
Oxygen O 15.9994(3)
Nitrogen N 14.0067
Carbon C 12.0107
Boron B 10.811(7)
Beryllium Be 9.012182(3)
Lithium Li [6.941(2)]
Helium He 4.002602
Hydrogen H 1.00794