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Pure and Applied Chemistry

The Scientific Journal of IUPAC

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

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On the discovery of the elements 110-112 (IUPAC Technical Report)

P. J. Karol1 / H. Nakahara2 / B. W. Petley3 / E. Vogt4

1IUPAC: Past Chair of Commission V.7 (Radiochemistry and Nuclear Techniques), Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213, USA

2IUPAC: Titular Member, Commission V.7 (Radiochemistry and Nuclear Techniques), Chemistry Department, Tokyo Metropolitan University, Tokyo 192-03, Japan

3IUPAP: Chair of Commission C2 (Symbols, Units, Nomenclature, Atomic Masses and Fundamental Constants), Centre for Basic, Thermal, and Length Metrology, National Physical Laboratory, Teddington, Middlesex TW11 OLW, UK

4IUPAP: Chair of Commission C12 (Nuclear Physics), TRIUMF, Vancouver, BC, V6T 1W5, Canada

Project Year: 1998, Project Code: 220/31/98

Citation Information: Pure and Applied Chemistry. Volume 73, Issue 6, Pages 959–967, ISSN (Online) 1365-3075, ISSN (Print) 0033-4545, DOI: 10.1351/pac200173060959, January 2009

Publication History

Published Online:

The IUPAC/IUPAP joint working party on the priority of claims to the discovery of elements 110, 111, and 112 has reviewed the relevant literature pertaining to the several claims. In accordance with the criteria for the discovery of elements, previously established by the 1992 IUPAC/IUPAP Transfermium Working Group, it was determined that the claim by the Hofmann et al. research collaboration for the discovery of element 110 at GSI has fulfilled those criteria. For elements 111 and 112, the collaboration of Hofmann et al. produced high-quality data with plausible interpretations, but confirmation by further results is needed to assign priority of discovery for these elements. The working party was not convinced that claims of other collaborations have satisfied the discovery criteria.


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