Atomic weights of the elements 1999
Pure and Applied Chemistry
By: T.B. Coplen
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Abstract
The biennial review of atomic-weight, Ar(E), determinations and other cognate data have resulted in changes for the standard atomic weights of the following elements: Presented are updated tables of the standard atomic weights and their uncertainties estimated by combining experimental uncertainties and terrestrial variabilities. In addition, this report again contains an updated table of relative atomic-mass values and half-lives of selected radioisotopes. Changes in the evaluated isotopic abundance values from those published in 1997 are so minor that an updated list will not be published for the year 1999. Many elements have a different isotopic composition in some nonterrestrial materials. Some recent data on parent nuclides that might affect isotopic abundances or atomic-weight values are included in this report for the information of the interested scientific community.
Suggested Citation
Coplen, T., 2001, Atomic weights of the elements 1999: Pure and Applied Chemistry, v. 73, no. 4, p. 667-683, https://doi.org/10.1351/pac200173040667.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Atomic weights of the elements 1999 |
| Series title | Pure and Applied Chemistry |
| DOI | 10.1351/pac200173040667 |
| Volume | 73 |
| Issue | 4 |
| Publication Date | January 01, 2009 |
| Year Published | 2001 |
| Language | English |
| Publisher | De Gruyter |
| Description | 17 p. |
| First page | 667 |
| Last page | 683 |