Dmitri Mendeleev was a Russian chemist best known for developing the Periodic Table of Elements. Born on February 8, 1834, in Siberia, he made significant contributions to the field of chemistry, most notably in 1869 when he published his version of the periodic table. Mendeleev's table organized the known elements by their atomic mass and demonstrated that elements with similar properties appeared at regular intervals, a concept known as periodicity.
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