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|
Riggli's Volumetric Model of the Periodic Table
From the Russian Book "100 Years of Periodic Law of Chemical Elements", Nauka 1969, p.87.
The caption says: "Volumetric Model of 18-period Long System of D.I.Mendeleev." after Riggli (1949).
Thanks to Larry T for the tip!
|Periodic Table, What is it showing?||
© Mark R. Leach 1999-
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