On the discovery of new elements (IUPAC/IUPAP Provisional Report) : Provisional Report of the 2017 Joint Working Group of IUPAC and IUPAP
Almost thirty years ago the criteria that are currently used to verify claims for the discovery of a new element were set down by the comprehensive work of a Transfermium Working Group, TWG, jointly established by IUPAC and IUPAP. The recent completion of the naming of the 118 elements in the first seven periods of the Periodic Table of the Elements was considered as an opportunity for a review of