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As he aged, Mendeleyev became increasingly eccentric–he refused to acknowledge the existence of radiation or the electron or anything else much that was new–and difficult.

State Department said it lifted sanctions imposed in 1999 against the Dmitri Mendeleyev University of Chemical Technology and the Moscow Aviation Institute.

As to immorality, it is not people like Mendeleyev but poets, abbots, and personages regularly attending Embassy churches, who have the reputation of being perverted debauchees, libertines, and drunkards.

That year also saw the death of Dmitri Mendeleyev.

Mendeleyev used a slightly different approach, placing his elements into groups of seven, but employed fundamentally the same principle.