Dmitri Mendeleev: Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs).

Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs).

-- Dmitri Mendeleev


		Name: Dmitri Mendeleev Type: Scientist Nationality: Russian Birth: February 8, 1834 Death: February 2, 1907

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