Discovery of isotopes led to understanding (atomic number corresponded with properties > than mass) (19 h 53 m, 1 jan 1913 ano – 21 h 42 m, 31 dez 1913 ano)
Descrição:
by Frederick Soddy. Mendeleev and Meyer thought atomic mass was the main correspondent with properties.Adicionado na linha do tempo:
Data:
19 h 53 m, 1 jan 1913 ano
21 h 42 m, 31 dez 1913 ano
~ 12 months