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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
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16 gen 1864 anni - Lothar Meyer
Descrizione:
Classified elements into six families by their valence.
Aggiunto al nastro di tempo:
8 dic 2017
1
0
747
Nedo Matic Atomic timeline
Data:
16 gen 1864 anni
Adesso
~ 160 years ago
Immagini: