Molar Mass of Elements

Molar Masses of the Elements

ELEMENT NAME

Actinium Aluminum Americium Antimony Argon Arsenic Astatine Barium Berkelium Beryllium Bismuth Bohrium Boron Bromine Cadmium Calcium Californium Carbon Cerium Cesium Chlorine Chromium Cobalt Copper Curium Dubnium Dysprosium Einsteinium Erbium Europium Fermium Fluorine Francium Gadolinium Gallium Germanium Gold Hafnium Hahnium Helium Holmium Hydrogen Indium Iodine Iridium Iron Joliotium Krypton Lanthanum Lawrencium Lead Lithium Lutetium Magnesium Manganese

CHEMICAL SYMBOL

Ac Al Am Sb Ar As At Ba Bk Be Bi Bh B Br Cd Ca Cf C Ce Cs Cl Cr Co Cu Cm Db Dy Es Er Eu Fm F Fr Gd Ga Ge Au Hf Hn He Ho H In I Ir Fe Jl Kr La Lr Pb Li Lu Mg Mn

ATOMIC NUMBER

89 13 95 51 18 33 85 56 97 4 83 107 5 35 48 20 98 6 58 55 17 24 27 29 96 104 66 99 68 63 100 9 87 64 31 32 79 72 108 2 67 1 49 53 77 26 105 36 57 103 82 3 71 12 25

MOLAR MASS

(227) 26.982 (243) 121.75 39.948 74.922 (210) 137.33 (247) 9.012 208.98 (262) 10.811 79.904 112.41 40.08 (251) 12.011 140.12 132.90 35.453 51.996 58.933 63.546 (247) (261) 162.50 (254) 167.26 151.96 (257) 18.998 (223) 157.25 69.723 72.61 196.97 178.49 (265) 4.003 164.93 1.008 114.82 126.90 192.22 55.847 (262) 83.80 138.91 (260) 207.2 6.941 174.97 24.305 54.938

ELEMENT NAME

CHEMICAL SYMBOL

Mendelevium Md

Meitnerium

Mt

Mercury

Hg

Molybdenum Mo

Neodymium

Nd

Neon

Ne

Neptunium

Np

Nickel

Ni

Niobium

Nb

Nitrogen

N

Nobelium

No

Osmium

Os

Oxygen

O

Palladium

Pd

Phosphorus

P

Platinum

Pt

Plutonium

Pu

Polonium

Po

Potassium

K

Praseodymium Pr

Promethium

Pm

Protactinium Pa

Radium

Ra

Radon

Rn

Rhenium

Re

Rhodium

Rh

Rubidium

Rb

Ruthenium

Ru

Rutherfordium Rf

Samarium

Sm

Scandium

Sc

Selenium

Se

Silicon

Si

Silver

Ag

Sodium

Na

Strontium

Sr

Sulfur

S

Tantalum

Ta

Technetium

Tc

Tellurium

Te

Terbium

Tb

Thallium

Tl

Thorium

Th

Thulium

Tm

Tin

Sn

Titanium

Ti

Tungsten

W

Ununnilium

Uun

Uranium

U

Vanadium

V

Xenon

Xe

Ytterbium

Yb

Yttrium

Y

Zinc

Zn

Zirconium

Zr

ATOMIC NUMBER

101 109 80 42 60 10 93 28 41 7 102 76 8 46 15 78 94 84 19 59 61 91 88 86 75 45 37 44 106 62 21 34 14 47 11 38 16 73 43 52 65 81 90 69 50 22 74 110 92 23 54 70 39 30 40

MOLAR MASS

(258) (266) 200.59 95.94 144.24 20.180 (237) 58.69 92.906 14.007 (259) 190.2 15.999 106.42 30.974 195.08 (244) (209) 39.098 140.91 (145) 213.04 (226) (222) 186.21 102.91 85.47 101.07 (263) 150.36 44.956 78.96 28.086 107.87 22.990 87.62 32.066 180.95 (98) 127.60 158.92 204.38 232.04 168.93 118.71 47.88 183.85 (272) 238.03 50.942 131.29 173.04 88.906 65.39 91.224

Molar masses based on 12 C = 12.000 amu Numbers in parentheses give the mass number of the most stable isotope

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