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The Commission on Isotopic Abundances and Atomic Weights (II.1) met in Pisa, Italy, prior the 44th IUPAC General Assembly held in Torino, Italy, 4-12 August 2007. Following its meeting, the Commission recommended significant changes to the standard atomic weights, Ar(E), of 5 chemical elements. The following changes are based on new determinations of isotopic abundances and reviews of previous isotopic abundances and atomic masses:
- Kod: Zaznacz cały
From To
lutetium 174.967(1) 174.9668(1)
molybdenum 95.94(2) 95.96(2)
nickel 58.6934(2) 58.6934(4)
ytterbium 173.04(3) 173.054(5)
zinc 65.409(4) 65.38(2)
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