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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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1969

Tasset's HarmonAtomic Periodic Table

Harry F. Tasset writes:

"The periodic table (below) was originally copyrighted by me in 1969 and represents those missing elements that were lost due to the influence of physicists who were trying to mold the table into a more 'suitable' form. While they did succeed for many years, innovators like Charles Janet (left step table) and Isaac Asimov (missing elements table) had other ideas.

"Below you will see that the laws of chemistry, first discovered by Mendeleev, triumphed."

Click the image to enlarge

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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