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


History of the recommended atomic-weight values*

Neodymium

 
Z
E
Year
Ar(E)
U[Ar(E)]
D[Ar(E)]
D[Ar(E)]
U[Ar(E)]
60 Nd 1894 140.5 0.3 -3.7 -12
1897 140.8 0.03 -3.4 -115
1899 143.6 0.3 -0.64 -2.1
1909 144.3 0.3 0.06 0.2
1925 144.27 0.03 0.03 1
1961 144.24 0.03 0 0
1969 144.24 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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