He realized that they had certain things in common and could be grouped by both atomic weight and chemical properties. Because of his faith in the order of the groups, he drafted the periodic table of the elements and correctly predicted the existence of a number of elements unknown at the time.
Тој увидел дека овие елементи имаат заеднички карактеристики и можат да се групираат, не само според нивната атомска тежина туку и според хемиските својства.