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What is the Periodic Table Showing? Periodicity

The INTERNET Database of Periodic Tables

There are thousands of periodic tables in web space, but this is the only comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Mark R. Leach Ph.D. The database holds information on periodic tables, the discovery of the elements, the elucidation of atomic weights and the discovery of atomic structure (and much, much more).

   Use the drop menus or search box (below) to Select or Search the 1400 entries in the database: 

  Or, Search by Text String:       

Periodic Tables from the year 1980 :

1980   Periodic RoundTable
1980   Contemporary Elements Periodic Table
Year:  1980 PT id = 158, Type = formulation spiral 3D

Periodic RoundTable

Gary Katz says: "The Periodic RoundTable is a unique three-dimensional model of the Periodic Table, an elegant spatial arrangement of the chemical elements that is both symmetrical and mathematical. It is the ultimate refinement of Mendeleev's scheme, one that will take us into the twenty-first century and beyond. The Periodic RoundTable possesses such a high degree of order because it is based exclusively on the system of ideal electronic configuration, which in turn is the basis of periodicity among the elements. In the Periodic RoundTable the electron shells are filled in the same order as the elements themselves appear, demonstrating a holistic relationship between the chemistry of the elements and the orbital descriptions of their electrons."

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Year:  1980 PT id = 322, Type = non-chem

Contemporary Elements

A 1980 periodic table (with updated 'modern revisions') by Joseph Di Gregorio that claims to show the "Contemporary Elements".

Click here to see the full size version:

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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