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6 янв 1940 г. - Francio y Astato

Описание:

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

Добавлено на ленту времени:

Historia de la Química

ByDaniel Martinez Alzate
21 фев 2019
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0
678

Дата:

6 янв 1940 г.
Сейчас
~ 85 г назад
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