Historedia
Episode 2 of 3

Presentation to the Russian Chemical Society

When
6 March 1869
Where
Saint Petersburg
Part of
Mendeleev completes and presents the periodic table

Mendeleev formally presented his periodic law to the Russian Chemical Society in March 1869.

Mendeleev presented 'The Dependence between the Properties of the Atomic Weights of the Elements' to the Russian Chemical Society. The presentation described elements by atomic weight and valence. His printed table appeared in the journal in May 1869.

Sources

  1. Dmitri Mendeleev Wikipedia, revision of 2026-10-05
  2. Periodic table Wikipedia, revision of 2026-09-21

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.