On the discovery of the elements 110-112 (IUPAC technical report)

The IUPAC/IUPAP joint working party on the priority of claims to the discov ery of elements 110, 111, and 112 has reviewed the relevant literature pert aining to the several claims. In accordance with the criteria for the disco very of elements, previously established by the 1992 IUPAC/IUPAP Transfermi um Working Group, it was determined that the claim by the Hofmann et al. re search collaboration for the discovery of element 110 at GSI has fulfilled those criteria. For elements 111 and 112, the collaboration of Hofmann et a l. produced high-quality data with plausible interpretations, but confirmat ion by further results is needed to assign priority of discovery for these elements. The working party was not convinced that claims of other collabor ations have satisfied the discovery criteria.