Molar Mass

Click button to see citations

Element

Rounded

( for regular calculations )

Standard

( for precise calculations )

Aluminum

26.98 g/mol

26.9815386 ± 0.0000008 g/mol

Antimony

121.8 g/mol

121.760 ± 0.001 g/mol

Argon

39.95 g/mol

39.948 ± 0.001 g/mol

Arsenic

74.92 g/mol

74.92160 ± 0.00002 g/mol

Barium

137.3 g/mol

137.327 ± 0.007 g/mol

Beryllium

9.012 g/mol

9.012182 ± 0.000003 g/mol

Bismuth

209.0 g/mol

208.98040 ± 0.00001 g/mol

Boron

10.81 g/mol

10.806 g/mol to 10.821 g/mol

Bromine

79.90 g/mol

79.904 ± 0.001 g/mol

Cadmium

112.4 g/mol

112.411 ± 0.008 g/mol

Calcium

40.08 g/mol

40.078 ± 0.004 g/mol

Carbon

12.011 g/mol

12.0096 g/mol to 12.0116 g/mol

Cerium

140.1 g/mol

140.116 ± 0.001 g/mol

Cesium

132.9 g/mol

132.9054519 ± 0.0000002 g/mol

Chlorine

35.45 g/mol

35.446 g/mol to 35.457 g/mol

Chromium

52.00 g/mol

51.9961 ± 0.0006 g/mol

Cobalt

58.93 g/mol

58.933195 ± 0.000005 g/mol

Copper

63.55 g/mol

63.546 ± 0.003 g/mol

Dysprosium

162.5 g/mol

162.500 ± 0.001 g/mol

Erbium

167.3 g/mol

167.259 ± 0.003 g/mol

Europium

152.0 g/mol

151.964 ± 0.001 g/mol

Fluorine

19.00 g/mol

18.9984032 ± 0.0000005 g/mol

Gadolinium

157.3 g/mol

157.25 ± 0.03 g/mol

Gallium

69.72 g/mol

69.723 ± 0.001 g/mol

Germanium

72.63 g/mol

72.63 ± 0.01 g/mol

Gold

197.0 g/mol

196.966569 ± 0.000004 g/mol

Hafnium

178.5 g/mol

178.49 ± 0.02 g/mol

Helium

4.003 g/mol

4.002602 ± 0.000002 g/mol

Holmium

164.9 g/mol

164.93032 ± 0.00002 g/mol

Hydrogen

1.008 g/mol

1.00784 g/mol to 1.00811 g/mol

Indium

114.8 g/mol

114.818 ± 0.003 g/mol

Iodine

126.9 g/mol

126.90447 ± 0.00003 g/mol

Iridium

192.2 g/mol

192.217 ± 0.003 g/mol

Iron

55.85 g/mol

55.845 ± 0.002 g/mol

Krypton

83.80 g/mol

83.798 ± 0.002 g/mol

Lanthanum

138.9 g/mol

138.90547 ± 0.00007 g/mol

Lead

207.2 g/mol

207.2 ± 0.1 g/mol

Lithium

6.94 g/mol

6.938 g/mol to 6.997 g/mol

Lutetium

175.0 g/mol

174.9668 ± 0.0001 g/mol

Magnesium

24.31 g/mol

24.3050 ± 0.0006 g/mol

Manganese

54.94 g/mol

54.938045 ± 0.000005 g/mol

Mercury

200.6 g/mol

200.59 ± 0.02 g/mol

Molybdenum

95.96 ± 0.02 g/mol

Neodymium

144.2 g/mol

144.242 ± 0.003 g/mol

Neon

20.18 g/mol

20.1797 ± 0.0006 g/mol

Nickel

58.69 g/mol

58.6934 ± 0.0004 g/mol

Niobium

92.91 g/mol

92.90638 ± 0.00002 g/mol

Nitrogen

14.007 g/mol

14.00643 g/mol to 14.00728 g/mol

Osmium

190.2 g/mol

190.23 ± 0.03 g/mol

Oxygen

15.999 g/mol

15.99903 g/mol to 15.99977 g/mol

Palladium

106.4 g/mol

106.42 ± 0.01 g/mol

Phosphorus

30.97 g/mol

30.973762 ± 0.000002 g/mol

Platinum

195.1 g/mol

195.084 ± 0.009 g/mol

Potassium

39.10 g/mol

39.0983 ± 0.0001 g/mol

Praseodymium

140.9 g/mol

140.90765 ± 0.00002 g/mol

Protactinium

231.0 g/mol

231.03588 ± 0.00002 g/mol

Rhenium

186.2 g/mol

186.207 ± 0.001 g/mol

Rhodium

102.9 g/mol

102.90550 ± 0.00002 g/mol

Rubidium

85.47 g/mol

85.4678 ± 0.0003 g/mol

Ruthenium

101.1 g/mol

101.07 ± 0.02 g/mol

Samarium

150.4 g/mol

150.36 ± 0.02 g/mol

Scandium

44.96 g/mol

44.955912 ± 0.000006 g/mol

Selenium

78.96 ± 0.03 g/mol

Silicon

28.085 g/mol

28.084 g/mol to 28.086 g/mol

Silver

107.9 g/mol

107.8682 ± 0.0002 g/mol

Sodium

22.99 g/mol

22.98976928 ± 0.00000002 g/mol

Strontium

87.62 g/mol

87.62 ± 0.01 g/mol

Sulfur

32.06 g/mol

32.059 g/mol to 32.076 g/mol

Tantalum

180.9 g/mol

180.94788 ± 0.00002 g/mol

Tellurium

127.6 g/mol

127.60 ± 0.03 g/mol

Terbium

158.9 g/mol

158.92535 ± 0.00002 g/mol

Thallium

204.38 g/mol

204.382 g/mol to 204.385 g/mol

Thorium

232.0 g/mol

232.03806 ± 0.00002 g/mol

Thulium

168.9 g/mol

168.93421 ± 0.00002 g/mol

Tin

118.7 g/mol

118.710 ± 0.007 g/mol

Titanium

47.87 g/mol

47.867 ± 0.001 g/mol

Tungsten

183.8 g/mol

183.84 ± 0.01 g/mol

Uranium

238.0 g/mol

238.02891 ± 0.00003 g/mol

Vanadium

50.94 g/mol

50.9415 ± 0.0001 g/mol

Xenon

131.3 g/mol

131.293 ± 0.006 g/mol

Ytterbium

173.1 g/mol

173.054 ± 0.005 g/mol

Yttrium

88.91 g/mol

88.90585 ± 0.00002 g/mol

Zinc

65.38 ± 0.02 g/mol

Zirconium

91.22 g/mol

91.224 ± 0.002 g/mol

Reference (Click the next to a value above to see complete citation information for that entry)

Wieser, Michael E., and Tyler B. Coplen. "Atomic weights of the elements 2009 (IUPAC Technical Report)." Pure and Applied Chemistry, volume 83, number 2, 2011, pp. 359–396. doi:10.1351/PAC-REP-10-09-14