Dmitri Mendeleev

Dmitri Ivanovich Mendeleev (often romanized as Mendeleyev or Mendeleef) (English: MEN-dəl-AY-əf; Russian: Дмитрий Иванович Менделеев, tr. Dmítriy Ivánovich Mendeléyev, IPA: [ˈdmʲitrʲɪj ɪˈvanəvʲɪtɕ mʲɪnʲdʲɪˈlʲejɪf] (listen); 8 February 1834 – 2 February 1907 [OS 27 January 1834 – 20 January 1907]) was a Russian chemist and inventor. He formulated the Periodic Law, created a farsighted version of the periodic table of elements, and used it to correct the properties of some already discovered elements and also to predict the properties of eight elements yet to be discovered.