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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:

Text search:       


Möbius-Escher Periodic Table

A comment article in Nature by Prof. Eric Scerri about quantum mechanics and the periodic table:

"Can quantum ideas explain chemistry's greatest icon? Simplistic assumptions about the periodic table lead us astray.

"Such has been the scientific and cultural impact of Dmitri Mendeleev's periodic table of the elements that many people assume it is essentially complete. [But] in its 150th year, can researchers simply raise a toast to the table's many dividends, and occasionally incorporate another heavy synthetic element?

"No – this invaluable compilation is still not settled. The placements of certain elements, even hydrogen and helium, are debated."

The article is accompanied by a fantastic illustration by Señor Salme with ideas from the Möbius strip and M.C. Escher:

Click image to enlarge:

Another Señor Salme PT image:

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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