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Vol. 31 No. 5
September-October 2009

Making an imPACt | Recent IUPAC technical reports and recommendations that affect the many fields of pure and applied chemistry.
See also www.iupac.org/publications/pac

Discovery of the Element with Atomic Number 112 (IUPAC Technical Report)
Robert C. Barber, Heinz W. Gäggeler, Paul J. Karol, Hiromichi Nakahara, Emanuele Vardaci, and Erich Vogt
Pure and Applied Chemistry, 2009
Vol. 81, No. 7, pp. 1331–1343

The IUPAC/IUPAP Joint Working Party (JWP) on the priority of claims to the discovery of new elements has reviewed the relevant literature pertaining to several claims. In accordance with the criteria for the discovery of elements previously established by the 1992 IUPAC/IUPAP Transfermium Working Group, and reiterated by the 1999 and 2003 IUPAC/IUPAP JWPs, it was determined that the 1996 and 2002 claims by the Hofmann et al. research collaborations for the discovery of the element with atomic number 112 at Gesellschaft für Schwerionenforschung (GSI) share in the fulfillment of those criteria. A synopsis of Z = 112 experiments and related efforts is presented. A subsequent report will address identification of higher-Z elements including those of odd atomic number.

http://dx.doi.org/10.1351/PAC-REP-08-03-05


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