Chemistry

Periodic table Relative Atomic Masses in tabular form

The Table below gives the relative atomic masses and the symbols of the elements. The relative atomic masses are accurate to one decimal place.

Element Symbol Ar Element Symbol Ar Element Symbol Ar
Actinium Ac Hafnium Hf 178.5 Potassium K 39.1
Aluminium Al 27.0 Hahnium Ha Praseodymium Pr 140.9
Americium Am Helium He 4.0 Promethium Pm
Antimony Sb 121.8 Holmium Ho 164.9 Protactinium Pa
Argon Ar 39.9 Hydrogen H 1.0 Radium Ra
Arsenic As 74.9 Indium In 114.8 Radon Rn
Astatin At Iodine I 126.9 Rhenium Re 186.2
Barium Ba 137.3 Iridium Ir 192.2 Rhodium Rh 102.9
Berkelium Bk Iron Fe 55.8 Rubidium Rb 85.5
Beryllium Be 9.0 Krypton Kr 83.8 Ruthenium Ru 101.1
Bismuth Bi 209.0 Kurebatovium Ku Samarium Sm 150.4
Boron B 10.8 Lanthanum La 138.9 Scandium Sc 45.0
Bromine Br 79.9 Lawrencium Lr Selenium Se 79.0
Cadmium Cd 112.4 Lead Pb 207.2 Silicon Si 28.1
Caesium Cs 132.9 Lithium Li 6.9 Silver Ag 107.9
Calcium Ca 40.1 Lutetium Lu 175.0 Sodium Na 23.0
Californium Cf Magnesium Mg 24.3 Stronium Sr 87.6
Carbon C 12.0 Manganese Mn 54.9 Sulphur S 32.1
Cerium Ce 140.1 Mendelevium Md Tantalum Ta 180.9
Chlorine Cl 35.5 Mercury Hg 200.6 Technetium Tc
Chromium Cr 52.0 Molybdenum Mo 95.9 Tellurim Te 127.6
Cobalt Co 58.9 Neodynium Nd 144.2 Terbium Tb 158.9
Copper Cu 63.5 Nickel Ni 58.7 Thallium Ti 204.4
Curium Cm Niobium Nb 92.9 Thorium Th 232.0
Dysprosium Dy 162.5 Nitrogen N 14.0 Thuliam Tm 169.9
Einsteinium Es Nobelium No Tin Sn 118.7
Erbium Er 167.3 Osmium Os 190.2 Titanium Ti 47.9
Europium Eu 152.0 Oxygen O 16.0 Tungsten W 183.9
Fermium Fm Palladium Pd 106.4 Uranium U 238.0
Flourine F 19.0 Phosphorus P 31.0 Vanadium V 50.9
Francium Fr Platinum Pt 195.1 Xenon Xe 131.3
Gadolinium Gd 157.3 Plutonium Pu ytterbium Yb 173.0
Gallium Ga 69.7 Polonium Po Yttrium Y 88.9
Germanium Ge 72.6 Neptonium Np Zinc Zn 65.4
Gold Au 197.0 Neon Ne 20.2 Zirconium Zr 91.2

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