Is the Periodic Table all right (“PT OK”)?
Department of Chemistry, University of Helsinki, POB 55 (A.I. Virtasen aukio 1), 00014 Helsinki, Finland
a e-mail: Pekka.Pyykko@helsinki.fi.
Published online: 1 December 2016
The history of the Periodic Table and its predecessors spans almost 200 years. The present IUPAC PT for Z = 1−118 is still adequate. The remarkable measurement for the Lr atom does not change the chemistry. The extensions up to Z = 172 are discussed and compared. New data for ions are presented. The “Madelung rule” is found to be surprisingly good even in that range.
© The Authors, published by EDP Sciences 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).