The INTERNET Database of Periodic Tables
There are hundreds of periodic tables in web space, but there is only one comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Dr Mark R Leach.
Concept of Chemical Periodicity
Concept of Chemical Periodicity: from Mendeleev Table to Molecular Hyper-Periodicity Patterns E. V. Babaev and Ray Hefferlin
The paper "The Concepts of Periodicity and Hyper-Periodicity: from Atoms to Molecules" was published as a the book: Concepts in Chemistry: a Contemporary Challenge. (Ed. D.Rouvray). Research Studies Press, London, 1996, pp. 24-81.
The website, here, is the original text of this paper (copyright by the authors).
The text deals with periodicity in isotopes, atoms and materials.
© Mark R. Leach 1999-
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