Dmitri Mendeleev: Architect of the Periodic Table

Mendeleev was born in Siberia in 1834, the youngest of a large family, and wrote chemistry textbooks by trade. Organizing elements for a chapter, he spotted periodicity and published his table in 1869, leaving gaps for undiscovered elements. His predictions of gallium, scandium, and germanium proved visionary. The table made him immortal far beyond Saint Petersburg..

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