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What is the Periodic Table Showing? Periodicity

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. The database holds information on periodic tables, the discovery of the elements, the elucidation of atomic weights and the discovery of atomic structure (and much, much more).

   Use the drop menus or search box (below) to Select or Search the 1400 entries in the database: 

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Year:  1922 PT id = 1129, Type = formulation

Aston's Periodic Table of The Elements

ISOTOPES F.W. ASTON, M.A., D.S.C., A.I.C., F.R.S., London, 1922, Edward Arnold & Co.

Harry F. Tasset writes:

"Francis Aston was a chemist and a physicist who pioneered the discovery of the isotopes. He was a Fellow of the Royal Society and worked with J.J. Thomson. He started his work with the mass spectrometer. His periodic table was published in 1922 and is remarkable because it was one of the first attempts to group the rare earth elements. His success in separating the isotopes was rewarded with the Nobel Prize in Chemistry in 1922."

Click image to enlarge:

Thanks to Harry F. Tasset for the tip and info!

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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