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

P. J. Karol 1 , H. Nakahara 2 , B. W. Petley 3  and E. Vogt 4
  • 1 IUPAC: Past Chair of Commission V.7 (Radiochemistry and Nuclear Techniques), Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213, USA
  • 2 IUPAC: Titular Member, Commission V.7 (Radiochemistry and Nuclear Techniques), Chemistry Department, Tokyo Metropolitan University, Tokyo 192-03, Japan
  • 3 IUPAP: 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
  • 4 IUPAP: Chair of Commission C12 (Nuclear Physics), TRIUMF, Vancouver, BC, V6T 1W5, Canada

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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Pure and Applied Chemistry is the official monthly Journal of the International Union of Pure and Applied Chemistry (IUPAC), with responsibility for publishing works arising from those international scientific events and projects that are sponsored and undertaken by the Union.

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