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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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Crehore's Periodic System

[Part of] Crehore's periodic system, with the electronic configurations of the atoms, from Crehore, Gyroscopic Theory, p 323 (1915).

Crehore adopted Rydberg's ordinal number, implying the existance of two elements between hydrogen and helium.

Note the absence of groups VI and VII and that beryllium is shown as "Gl", glacinium.

From H. Kragh, Resisting the Bohr Atom, Perspectives in Physics, 13, (2011), 4-35:

Thanks to Eric Scerri for the tip!
See the website and Eric's Twitter Feed.

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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