Atomic weights of the elements 2005 (IUPAC Technical Report)

✍ Scribed by Wieser, M. E.

• Book ID: 111922186
• Publisher: International Union of Pure and Applied Chemistry
• Year: 2006
• Tongue: English
• Weight: 216 KB
• Volume: 78
• Category: Article
• ISSN: 0033-4545
• DOI: 10.1351/pac200678112051

✦ Synopsis

The latest evaluation of atomic weight determinations and other cognate data has warranted 16 changes for the standard atomic weights of the elements, A~r~(E), from those published previously in the 2001 Table of Atomic Weights. The revised standard atomic weights are as follows: A~r~(Al) = 26.981 5386(8), A~r~(Bi) = 208.980 40(1), A~r~(Cs) = 132.905 4519(2), A~r~(Co) = 58.933 195(5), A~r~(Au) = 196.966 569(4), A~r~(La) = 138.905 47(7), A~r~(Mn) = 54.938 045(5), A~r~(Nd) = 144.242(3), A~r~(P) = 30.973 762(2), A~r~(Pt) = 195.084(9), A~r~(Sm) = 150.36(2), A~r~(Sc) = 44.955 912(6), A~r~(Na) = 22.989 769 28(2), A~r~(Ta) = 180.947 88(2), A~r~(Tb) = 158.925 35(2), A~r~(Th) = 232.038 06(2). A recommendation is made that δ^13^C values of all carbon-bearing materials be measured and expressed relative to Vienna Pee Dee Belemnite (VPDB) on a scale normalized by assigning consensus values of -46.6 ‰ to L-SVEC lithium carbonate and +1.95 ‰ to NBS 19 calcium carbonate.