Dmitry Ivanovich Mendeleiev ( 1044; 1084; 1080; 1090; 1088; 1080; 1081; 1048; 1074; 1072; 1085; 1086; 1074; 1080; 1095; 1052; 1077; 1085; 1076; 1077; 1083; 1077; 1077; 1074; ) was a Russian chemist who at the end of the 19th century discovered a relationship between the properties of the chemical elements that allowed them to be classified into a periodic table of the chemical elements.
