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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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1994

Where Should Aluminium Go?

Fathi Habashi aruges in Chemistry in Education (1994) that aluminium, Al, should be placed above scandium and next to magnesium. There is more information about this formulation here:

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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