26 mayo 1820 año - Discovery of the Relative Atomic Mass (Dobereiner)
Descripción:
He discovered how the relative atomic mass of the middle element in a group of three is almost halfway between the lightest and the heaviest ones in the group. He called these pattern a “triad”. He organized many of the elements that (at that time) were discovered that way.Añadido al timeline:
fecha:
26 mayo 1820 año
Ahora mismo
~ 204 years ago
