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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.

Use the drop menus below to search & select from the more than 1100 Period Tables in the database:

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1956

Remy's Long Period Form Periodic Table

From H. Remy's 1956, Treatise on Inorganic Chemistry, Vol. 1, (Introduction and main groups of the periodic table), Elsevier, Amsterdam, p. 4, is what Remy calls a "Long-Period Form of the Natural System of the Elements".

This is a semi-lanthanide/actinide formulation, with Th-Pa-U shown as 6d metals, and the remaining actinides (Np, etc.) shown as transuranic counterparts to Pm, etc. The layout of Remy's table was based on ideas by Haissinsky in competition with Seaborg's formulation of 1945.

Thanks to René for the tip!

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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