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jan 6, 1940 - Francio y Astato

Description:

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

Added to timeline:

Historia de la Química

ByDaniel Martinez Alzate
21 Feb 2019
0
0
678

Date:

jan 6, 1940
Now
~ 85 years ago
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