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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 1928:

1928   Janet's Helicoidal Classification
1928   Janet's Left Step Periodic Table
1928   Janet's Three-Dimensional Spiral-Tube System
1928   Janet's Lemniscate Formulation
1928   Riesenfeld's Periodic Table
1928   Corbino's Right-Step Periodic Table

Year:  1928 PT id = 74

Janet's Helicoidal Classification

Janet's Helicoidal Classification, essentially his left-step formulation in its spiral version (ref. Charles Janet, La Classification Hélicoïdale des Éléments Chimiques. Beauvais: Imprimerie Départementale de l'Oise. 1928). Information supplied by Philip Stewart:

From Quam & Quam's 1934 review paper.pdf

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Year:  1928 PT id = 152

Janet's Left Step Periodic Table

There are the three versions of Janet's left step PT. He tried out versions I and II in his April 1928 paper, and rejected them in favour of version III in his paper of November of the same year. Each one was derived from a helix drawn on nested cylinders. Information supplied by Philip Stewart. Click each image for a larger image:

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Year:  1928 PT id = 289

Janet's Three-Dimensional Spiral-Tube System

Janet's Three-Dimensional Spiral-Tube System of 1928 (from van Spronsen):

Click here for large diagram.

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Year:  1928 PT id = 305

Janet's "Lemniscate" Formulation

From in The Helicoidal Classification of the Elements, Chemical News vol. 138, 21 June 1929, Fig. XI, p. 392:

Philip Stewart points out that this formulation is an 'end on' view of the Janet Cylinder or Three-Dimensional Spiral-Tube System formulation, and the term "lemniscate" comes from Mazurs.

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Year:  1928 PT id = 594

Riesenfeld Periodic Table

From here, using Google Translate:

This table is from the book "Practical Inorganic Chemistry" Publisher EH Riesenfeld Labor, Barcelona (1950). It is a reprint of the second edition (1943) which in turn is a translation of a German edition, its seventh edition in 1928. This suggests that Riesenfeld is himself the author of it.

It is a pre-Seaborg table in the sense that the actinides are known throughout the period July. It also does not include the Tc since it was discovered in 1937. These facts support the dating of the table. But the most interesting thing about it is that to make the separation between subgroups and major groups Be cut after the first period and after the Al in the second. Which leaves isolated in group B without any element 2b below it:

Thanks to Eric Scerri for the tip!
See the website and Eric's Twitter Feed.

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Year:  1928 PT id = 989

Corbino's Right-Step Periodic Table

Published in the same year as Janet's Left-Step formulation, Corbino OM (1928) Riv Nuovo Cimento 5:LXI (and from here) produced a Right-Step version.

Commenting on this formulation, Valery Tsimmerman writes:

"Corbino saw what Janet failed to see: If blocks shifted by corresponding value of quantum number l, then the rows represent electronic shells and Janet saw what Corbino fained to see, namely the Janet rule, also known as Madelung rule. Both used rectangular boxes, but neither noticed the perimeter rule."


Thanks to Valery 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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