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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:

  Text Search:       

Periodic Tables from the year 1923:

1923   Deming's Periodic Table
1923   Deming's Other 1923 Periodic Table: Mendeleev style
1923   Lewis' Periodic Table
1923   Fajans' Periodic Table


Deming Periodic Table

H.G. Deming used the long periodic table in his textbook General Chemistry, which appeared in the USA for the first time in 1923 (Wiley), and designated the first two and the last five Main Groups with the notation "A", and the intervening Transition Groups with the notation "B".

The numeration was chosen so that the characteristic oxides of the B groups would correspond to those of the A groups. The iron, cobalt, and nickel groups were designated neither A nor B. The Noble Gas Group was originally attached (by Ueming) to the left side of the periodic table. The group was later switched to the right side and usually labeled as Group VlllA.

This version of the periodic table was distributed for many years by the Sargent-Welch Scientific Company, Skokie, Illinois, USA.:

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Deming’s Other 1923 Periodic Table: Mendeleev style

Deming's "other" 1923 periodic table: a Mendeleev style formulation with an unusual metal-non-metal dividing line:

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Lewis' Periodic Table

From G.N. Lewis' book: VALENCE and the Structure of Atoms and Molecules, The Chemical Catalog Company (1923).

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Fajans' Periodic Table

Fajans K., Radioactivity and the latest developments in the study of the chemical elements, trans. TS Wheeler, WG King, 4th German edition, Methuen & Co., London, pp. 116-117, 1923.

René Vernon writes: "An addition to the long list of tables with B-Al over Sc."

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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