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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 1300 Period Tables in the database: 

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Year:  1922 PT id = 285

Bohr's System

Niels Bohr's system of 1922 (Theory of Spectra and Atomic Constitution, Cambridge University Press) and as reproduced by van Spronsen:

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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