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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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Periodic Tables from the year 1934:

1934   Quam & Quam's Graphical Representations of The Elements
1934   Romanoff's System
1934   Leningrad Monument To The Periodic Table
1934   Brazilian Version of The Hubbard Periodic Chart Of The Atoms
1934   White's Periodic Table


Quam & Quam's Graphical Representations of The Elements

Short Periodic Tables.pdf
Medium Periodic Tables.pdf
Spiral, Helical & Misc Periodic Tables.pdf

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Romanoff's System

From Revue Scientifique 1934, V. Romanoff's paper (pages 661–665) Le Système Périodique de Mendéléeff Par Représentation Graphique.

Dr. Erik Strub writes:

"The article's Fig. 1 is the first [formulation] (to my knowledge) which contains a "classical" representation of the periodic system in which an Actinoide series is placed beneath the Lanthanoides and not beneath the d block elements:

Romanoff's System of 1934 (from van Spronsen):

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Leningrad Monument To The Periodic Table

Leningrad monument to the periodic table, located near to the main chamber of weights and measures, 1934 (from van Spronsen):

From Wikipedia:

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Brazilian Version of The Hubbard Periodic Chart Of The Atoms

A Brazilian Version of the American classic Henry Hubbard Periodic Chart Of The Atoms from a lecture theater in Rio, rediscovered by Martyn Poliakoff of and The University of Nottingham. From the early 1930s:

The current Sargent Welch version of the Henry Hubbard Periodic Table:

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White's Periodic Table

The periodic table of White shows the normal state electronic configurations, from H.E. White. Introduction to Atomic Spectra. New York: McGraw-Hill, 1934,
p. 85, Table 5.4..

Helium is clearly associated with H, and placed above Be in accord with the s2 electron configuration of the free atom.

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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