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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:  1911 PT id = 76

Emerson's Helix

From Quam & Quam's 1934 review paper.pdf:

Another version of Emerson's Helix from "100 Years of Periodic Law of Chemical Elements, Nauka 1969, p. 74:

Thanks to Larry T for the tip!

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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