The INTERNET Database of Periodic Tables
|2019 has been designated the International Year of the Periodic Table as it is the 150th Anniversary of the formulation of Mendeleev's Tabelle I|
Courtines' A Model of the Periodic Table or Periodic Classification
Published in J. Chem. Ed., 2, 2, 107-109 in 1925 by M. Courtines of the Laboratory of Experimental Physics, College of France, Paris.
We do not know the date of the forth image (below), but it looks as if it was prepared a few years later. However, it is a 'top down' view of the 3D formulation.
From Quam & Quam's 1934 review paper.pdf
Thanks to Eric Scerri for the tip!
See the website EricScerri.com and Eric's Twitter Feed
|Periodic Table, What is it showing?||
© Mark R. Leach 1999-
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