Dmitri Mendeleev (8 February 1834 – 2 February 1907) was a Russian chemist and inventor. He is best known for formulating the Periodic Law and creating a version of the periodic table of elements. Dmitri Mendeleev was a Russian chemist and inventor born on 8 February 1834, in Tobolsk, Russia. He is best known for devising the periodic table, one of the most important tools in the study of chemistry. Mendeleev received a formal education in Russia, studying at the University of St. Petersburg and the Main Pedagogical Institute. After graduation, he began work as a professor at the University of St. Petersburg, where he taught chemistry and physics.