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Pure Appl. Chem., Vol. 70, No. 1, pp. 237-257, 1998.


History of the recommended atomic-weight values*

Cerium 

Z
E
Year
Ar(E)
U[Ar(E)]
D[Ar(E)]
D[Ar(E)]
U[Ar(E)]
58 Ce 1882 140.75 0.1 0.63 6.3
1894 140.25 0.03 0.13 4.5
1898 139.35 0.03 -0.77 -26
1900 139 3 -1.1 -0.37
1903 140 3 -0.12 -0.039
1904 140.25 0.03 0.13 4.47
1929 140.13 0.03 0.014 0.47
1961 140.12 0.03 0.004 0.13
1969 140.12 0.01 0.004 0.4
1985 140.115 0.004 -0.001 -0.25
1995 140.116 0.001

> Return to list or table of elements

Ref. History of the recommended atomic-weight values from 1882 to 1997: a comparison of differences from current values to the estimated uncertainties of earlier values, Pure Appl. Chem., Vol. 70, No. 1, pp. 237-257, 1998.

Page last modified 7 June 2000
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