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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Ed. by Qaim, Syed M.

IMPACT FACTOR increased in 2015: 1.100
5-year IMPACT FACTOR: 1.229
Rank 15 out of 32 in category Nuclear Science & Technology in the 2015 Thomson Reuters Journal Citation Report/Science Edition

SCImago Journal Rank (SJR) 2015: 0.470
Source Normalized Impact per Paper (SNIP) 2015: 0.708
Impact per Publication (IPP) 2015: 1.048

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The impact of the properties of the heaviest elements on the chemical and physical sciences

1Institut für Kernchemie, Universität Mainz, 55099 Mainz, Germany

©2014 by Walter de Gruyter Berlin/Boston. This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY-NC-ND 3.0)

Citation Information: Radiochimica Acta. Volume 100, Issue 8-9, Pages 569–578, ISSN (Online) 2193-3405, ISSN (Print) 0033-8230, DOI: 10.1524/ract.2012.1963, April 2014

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The unique role of the heaviest elements in chemical and physical sciences is discussed. With the actinide series (Z = 90-103) and the superactinide series (Z = 122-155), the heaviest elements have significantly shaped the architecture of the Periodic Table of the elements. Relativistic effects in the electron shells of the heaviest elements change the chemical properties in a given group in a non-linear fashion. Relativistically stabilized sub-shell closures give rise to a new category of elements in the Periodic Table: volatile metals. The prototype for this property is element 114 which, due to the relativistic stabilization of its 7s2 7p21/2 electron configuration, is volatile in its elementary state, but, in contrast to a noble gas, exhibits a marked metalmetal interaction with a gold surface at room temperature. Nuclear shell effects dominate the physical properties of the transuranium elements. These give rise to superdeformed shape isomers (fission isomers) in the actinides (U-Bk). Superheavy elements (Z ≥ 104) owe their existence solely to nuclear shell effects at N = 152, 162, and 184. At this time, a building lot is the location of the next spherical proton shell closure as there is evidence that the center of the “island of stability” is not at Z = 114. This needs urgently further theoretical and experimental efforts. The cross sections for the syntheses of elements 119 and 120 will give us important information on the “upper end of the Periodic Table of the elements”.

Keywords: Transuranium elements; Periodic Table; Atomic structure; Relativistic effects; Nuclear structure; Nuclear shell effects; Fission isomers; Neutron-shell closures in the transactinides; Search for the next spherical proton shell

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