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Pure and Applied Chemistry

The Scientific Journal of IUPAC

Ed. by Burrows, Hugh / Weir, Ron / Stohner, Jürgen

12 Issues per year

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Rank 41 out of 148 in category Multidisciplinary Chemistry in the 2013 Thomson Reuters Journal Citation Report/Science Edition

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Atomic weights of the elements 2011 (IUPAC Technical Report)

Michael E. Wieser1 / Norman Holden2 / Tyler B. Coplen3 / John K. Böhlke3 / Michael Berglund4 / Willi A. Brand5 / Paul De Bièvre6 / Manfred Gröning7 / Robert D. Loss8 / Juris Meija9 / Takafumi Hirata10 / Thomas Prohaska11 / Ronny Schoenberg12 / Glenda O’Connor13 / Thomas Walczyk14 / Shige Yoneda15 / Xiang-Kun Zhu16

1Department of Physics and Astronomy, University of Calgary, Calgary, Canada

2Brookhaven National Laboratory, Upton, NY, USA

3U.S. Geological Survey, Reston, VA, USA

4Institute for Reference Materials and Measurements, Geel, Belgium

5Max Planck Institute for Biogeochemistry, Jena, Germany

6Independent Consultant on MiC, Belgium

7International Atomic Energy Agency, Seibersdorf, Austria

8Department of Applied Physics, Curtin University of Technology, Perth, Australia

9National Research Council of Canada, Ottawa, Canada

10Kyoto University, Kyoto, Japan

11Department of Chemistry, University of Natural Resources and Applied Life Sciences, Vienna, Austria

12Institute for Geosciences, University of Tübingen, Tübingen, Germany

13New Brunswick Laboratory, Argonne, IL, USA

14Department of Chemistry (Science) and Department of Biochemistry (Medicine), National University of Singapore (NUS), Singapore

15National Museum of Nature and Science, Tokyo, Japan

16Chinese Academy of Geological Sciences, Beijing, China

Project Year: 2009, Project Code: 2009-029-1-200

Citation Information: Pure and Applied Chemistry. Volume 85, Issue 5, Pages 1047–1078, ISSN (Online) 1365-3075, ISSN (Print) 0033-4545, DOI: 10.1351/PAC-REP-13-03-02, April 2013

Publication History

Published Online:

The biennial review of atomic-weight determinations and other cognate data has resulted in changes for the standard atomic weights of five elements. The atomic weight of bromine has changed from 79.904(1) to the interval [79.901, 79.907], germanium from 72.63(1) to 72.630(8), indium from 114.818(3) to 114.818(1), magnesium from 24.3050(6) to the interval [24.304, 24.307], and mercury from 200.59(2) to 200.592(3). For bromine and magnesium, assignment of intervals for the new standard atomic weights reflects the common occurrence of variations in the atomic weights of those elements in normal terrestrial materials.

Keywords: atomic-weight intervals; atomic-weight ranges; bromine; conventional atomic-weight values; germanium; half-lives; indium; IUPAC Inorganic Chemistry Division; magnesium; mercury; standard atomic weights


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