12 h 38 m, 17 fev 1869 ano - Dmitri Mendeleev - Periodic Table
Descrição:
Mendeleev created a table that ordered all known elements based on their atomic weight, there was a recurring pattern of properties between the groups of elements.
Adicionado na linha do tempo:
Data:
12 h 38 m, 17 fev 1869 ano
Agora
~ 156 years ago