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Project: Priority claims for the discovery of elements with atomic number greater than 111

Number: 2006-046-1-200
Start: 01 February 2006
Project of
Chair:
Members:
Objective

Remark: Joint IUPAP/IUPAC Working Party

The IUPAC/IUPAP Joint Working Party is charged with examining the priority claims for the discovery of elements with atomic number greater than 111.

Description
The procedures to be followed in assigning priorities and the subsequent naming process will be the same as those used for the recently named elements darmstadtium and roentgenium with atomic numbers 110 and 111, respectively.

In brief, the submissions received will be examined by a IUPAC/IUPAP Joint Working Party of experts the membership of which is approved by the Presidents of IUPAC and of the International Union of Pure and Applied Physics (IUPAP). The JWP will issue its findings in the form of a report and the successful claimants will then be invited to propose a name for any element for the discovery of which they have been given priority. The details of procedures are set out in detail in the IUPAC web:

> Naming the Elements

Progress

Claims for the discovery of elements of atomic number greater than 111 have been invited and the scientists name below have submitted the following claims:

  • Dr. Amnon Marinov, The Hewbrew University, Jerusalem, Israel; for element 112
  • Dr. Kosuke Morita, The Institute of Physical and Chemical Research, Riken, Japan; for element 112 (in part) and element 113
  • Dr. Sergey Dimitriev, Joint Institute for Nuclear Research, Dubna, Russia; for elements 112, 113, 114, 115, 116, and 118
  • Dr. Sigurd Hofmann, Gesellschaft fur Schwerionenforschung mbH, Darmstadt, Germany; for element 112

> project announcement first published in Chem. Int. Jan-Feb 2007

Z greater than 111 - submission invited to establish priorities for the discovery (posted 25 Jan 06)

 

May 2009 update - 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 Hofmann et al. research collaborations for the discovery of the element with atomic number 112 at GSI share in the fulfillment of those criteria.

A synopsis of the relevant experiments and related efforts is presented in a technical report published online in Pure and Applied Chemistry on 25 May 2009. See Pure Appl. Chem.  2009, Vol. 81, No. 7, pp. 1331-1343; doi:10.1351/PAC-REP-08-03-05