Dmitri Mendeleev
Dmitri Ivanovich Mendeleev (born 8 February  (O.S. 27 January) 1834 near Tobolsk – 2 February (O.S. 20 January 20) 1907 in Saint Petersburg) was a Russian chemist who created the periodic table of elements. Many of the predictions made in his periodic table (such as the properties of elements undiscovered at the time) were later proved correct by experiments. Chemical element 101 was named Mendelevium.