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6 Jan 1940 Jahr - Francio y Astato

Beschreibung:

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

Zugefügt zum Band der Zeit:

Historia de la Química

ByDaniel Martinez Alzate
21 Feb 2019
0
0
678

Datum:

6 Jan 1940 Jahr
Jetzt
~ 85 years ago
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