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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 1983 :

1983   Periodic Pyramid
1983   Seawater Periodic Table


Year:  1983 PT id = 50, Type = formulation 3D

Periodic Pyramid

Periodic table designed in the style of a pyramid by Charles E. Gragg. This table was published by Instruments for Research and Industry and includes instructions for assembly into a 3-D model.

More information, including high resolution files, at the Science History Institute.

Thanks to René Vernon for the tip!

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Year:  1983 PT id = 233, Type = data

Seawater Periodic Table

A periodic table of references to analytical chemistry papers associated with the elements. If you want to know how much gallium in seawater, this would be a good place to start:

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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