Table of Atomic Weights (AW), Atomic Mass or Relative Atomic Weights
The atomic number refers to the number of protons in an atom of the element and determines its position in a periodic table.
Name of element | Symbol | Atomic number | Atomic Weight | |
---|---|---|---|---|
actinium | Ac | 89 | 227 | |
aluminium | Al | 13 | 26.981538 | |
americium | Am | 95 | 243 | |
antimony | Sb | 51 | 121.76 | |
argon | Ar | 18 | 39.948 | |
arsenic | As | 33 | 74.9216 | |
astatine | At | 85 | 210 | |
barium | Ba | 56 | 137.327 | |
berkelium | Bk | 97 | 247 | |
beryllium | Be | 4 | 9.012182 | |
bismuth | Bi | 83 | 208.98038 | |
bohrium | Bh | 107 | 264 | |
boron | B | 5 | 10.811 | |
bromine | Br | 35 | 79.904 | |
cadmium | Cd | 48 | 112.411 | |
caesium | Cs | 55 | 132.90545 | |
calcium | Ca | 20 | 40.078 | |
californium | Cf | 98 | 251 | |
carbon | C | 6 | 12.0107 | |
cerium | Ce | 58 | 140.116 | |
chlorine | Cl | 17 | 35.4527 | |
chromium | Cr | 24 | 51.9961 | |
cobalt | Co | 27 | 58.9332 | |
copper | Cu | 29 | 63.546 | |
curium | Cm | 96 | 247 | |
dubnium | Db | 105 | 262 | |
dysprosium | Dy | 66 | 162.5 | |
einsteinium | Es | 99 | 252 | |
erbium | Er | 68 | 167.26 | |
europium | Eu | 63 | 151.964 | |
fermium | Fm | 100 | 257 | |
fluorine | F | 9 | 18.9984032 | |
francium | Fr | 87 | 223 | |
gadolinium | Gd | 64 | 157.25 | |
gallium | Ga | 31 | 69.723 | |
germanium | Ge | 32 | 72.61 | |
gold | Au | 79 | 196.96655 | |
hafnium | Hf | 72 | 178.49 | |
hassium | Hs | 108 | 269 | |
helium | He | 2 | 4.002602 | |
holmium | Ho | 67 | 164.93032 | |
hydrogen | H | 1 | 1.00794 | |
indium | In | 49 | 114.818 | |
iodine | I | 53 | 126.90447 | |
iridium | Ir | 77 | 192.217 | |
iron | Fe | 26 | 55.845 | |
krypton | Kr | 36 | 83.8 | |
lanthanum | La | 57 | 138.9055 | |
lawrencium | Lr | 103 | 262 | |
lead | Pb | 82 | 207.2 | |
lithium | Li | 3 | 6.941 | |
lutetium | Lu | 71 | 174.967 | |
magnesium | Mg | 12 | 24.305 | |
manganese | Mn | 25 | 54.938049 | |
meitnerium | Mt | 109 | 268 | |
mendelevium | Md | 101 | 258 | |
mercury | Hg | 80 | 200.59 | |
molybdenum | Mo | 42 | 95.94 | |
neodymium | Nd | 60 | 144.24 | |
neon | Ne | 10 | 20.1797 | |
neptunium | Np | 93 | 237 | |
nickel | Ni | 28 | 58.6934 | |
niobium | Nb | 41 | 92.90638 | |
nitrogen | N | 7 | 14.00674 | |
nobelium | No | 102 | 259 | |
osmium | Os | 76 | 190.23 | |
oxygen | O | 8 | 15.9994 | |
palladium | Pd | 46 | 106.42 | |
phosphorus | P | 15 | 30.973762 | |
platinum | Pt | 78 | 195.078 | |
plutonium | Pu | 94 | 244 | |
polonium | Po | 84 | 210 | |
potassium | K | 19 | 39.0983 | |
praseodymium | Pr | 59 | 140.90765 | |
promethium | Pm | 61 | 145 | |
protactinium | Pa | 91 | 231.03588 | |
radium | Ra | 88 | 226 | |
radon | Rn | 86 | 222 | |
rhenium | Re | 75 | 186.207 | |
rhodium | Rh | 45 | 102.9055 | |
rubidium | Rb | 37 | 85.4678 | |
ruthenium | Ru | 44 | 101.07 | |
rutherfordium | Rf | 104 | 261 | |
samarium | Sm | 62 | 150.36 | |
scandium | Sc | 21 | 44.95591 | |
seaborgium | Sg | 106 | 266 | |
selenium | Se | 34 | 78.96 | |
silicon | Si | 14 | 28.0855 | |
silver | Ag | 47 | 107.8682 | |
sodium | Na | 11 | 22.98977 | |
strontium | Sr | 38 | 87.62 | |
sulphur | S | 16 | 32.066 | |
tantalum | Ta | 73 | 180.9479 | |
technetium | Tc | 43 | 98 | |
tellurium | Te | 52 | 127.6 | |
terbium | Tb | 65 | 158.92534 | |
thallium | Tl | 81 | 204.3833 | |
thorium | Th | 90 | 232.0381 | |
thulium | Tm | 69 | 168.93421 | |
tin | Sn | 50 | 118.71 | |
titanium | Ti | 22 | 47.867 | |
tungsten | W | 74 | 183.84 | |
ununbium | Uub | 112 | 277 | |
ununnilium | Uun | 110 | 269 | |
unununium | Uuu | 111 | 272 | |
uranium | U | 92 | 238.0289 | |
vanadium | V | 23 | 50.9415 | |
xenon | Xe | 54 | 131.29 | |
ytterbium | Yb | 70 | 173.04 | |
yttrium | Y | 39 | 88.90585 | |
zinc | Zn | 30 | 65.39 | |
zirconium | Zr | 40 | 91.224 |