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

History of the recommended atomic-weight values*

Hafnium

Z	E	Year	A_r(E)	U[A_r(E)]	D[A_r(E)]	D[A_r(E)] U[A_r(E)]
72	Hf	1931	178.6	0.3	0.11	0.37
		1955	178.5	0.03	0.01	0.33
		1961	178.49	0.03	0	0
		1969	178.49	0.03	0	0
		1985	178.49	0.02

> 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.

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