science · 02 February 1907 · 117 years ago
death
Died 2 Feb 1907 at age 72 (born 8 Feb 1834).
(Also spelled Mendeleyev) Russian chemist who developed the periodic classification of the elements. In his final version of the periodic table (1871) he left gaps, foretelling that they would be filled by elements not then known and predicting the properties of three of those elements.
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