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6 jan 1940 ano - Francio y Astato

Descrição:

En 1939 y 1940 se descubrieron los elementos número 87 (francio) y número 85 (as-tato)

Adicionado na linha do tempo:

Historia de la Química

ByDaniel Martinez Alzate
21 fev 2019
0
0
678

Data:

6 jan 1940 ano
Agora
~ 85 years ago
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