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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: 

  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
1923   Deming's Periodic Table With Commentry by Vernon

Year:  1923 PT id = 360

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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Year:  1923 PT id = 456

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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Year:  1923 PT id = 941

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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Year:  1923 PT id = 1198

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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Year:  1923 PT id = 1256

Deming's Periodic Table With Commentry by Vernon

René Vernon writes:

Deming's 1923 periodic table is credited with popularizing the 18-column form.

I now see Deming used different thickness sloping lines to represent the different degrees of similarity between the main groups and their corresponding transition metal groups.

When I plot up to 20 chemical properties v Z going down these options I get the following values for the average smoothness of the trendlines:

I would have thought the smoothness for the line between Li-Na and Cu would be < 70%, consistent with Deming’s dashed line. But the thickness of the line would depend on what Deming took into account when he drew it. The common wisdom about groups 1 and 11 is that their similarities are: "confined almost entirely to the stoichiometries (as distinct from the chemical properties) of the compounds in the +1 oxidation state." (Greenwood & Earnshaw 2002, p. 1177). Kneen et al. (1972, p. 521) say that, "the differences between the properties of the group IA and IB elements are those between a strongly and weakly electropositive metal." On this basis I follow Deming’s dashed line. I’ve appended some notes about Group 1 and Group 11.

I have [calculated] a smoothness for C-Si-Ti-Zr-Hf of 86% versus 70% for C-Si-Ge-Sn-Pb. Since Ti shows some transition metal chemistry but not C-Si, it is perhaps plausible to keep C-Si-Ge-Sn-Pb together (as Deming did ).

Deming was a smart author. Nigh on a century later and the metrics check out.

More about group 1 and group 11

There may be a little more to the relationship between Li-Na & Cu-Ag-Au, than is ordinarily appreciated. For example:


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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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