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Icon of Chemistry: The Periodic System of Chemical Elements in the New Century
Author(s) -
Wang ShuGuang,
Schwarz W. H. Eugen
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200800827
Subject(s) - icon , periodic system , chemistry , nanotechnology , materials science , computer science , mathematics , mathematical analysis , programming language
Abstract A closer look : A deeper theoretical understanding of the multifaceted periodic system of elements (PSE) has been achieved in recent years. The large energy gaps above the noble gas shells 1s 2 and n p 6 ( n =2–6) impress periodicity onto the whole PSE, which is complete with Period 7. The electron configurations of unbound atoms are chemically misleading. The common n + l rule is an example of the “invention of facts” even in the hard sciences.