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


History of the recommended atomic-weight values*

Gadolinium

Z
E
Year
Ar(E)
U[Ar(E)]
D[Ar(E)]
D[Ar(E)]

U[Ar(E)]
64 Gd 1894 156.1 0.3 -1.2 -3.8
1897 156.76 0.03 -0.49 -16
1900 157 0.3 -0.25 -0.83
1902 156.4 0.3 -0.85 -2.8
1903 156 3 -1.25 -0.42
1909 157.3 0.3 0.05 0.17
1925 157.26 0.03 0.01 0.33
1931 157.3 0.3 0.05 0.17
1937 156.9 0.3 -0.35 -1.2
1955 157.21 0.03 -0.04 -1.3
1961 157.25 0.03 0 0
1969 157.25 0.03

> 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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