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1 janv. 1900 - Radioactivity

Description:

Four radioactive elements were known in 1900: radium, actinium, thorium, and uranium.

Ajouté au bande de temps:

Periodic Table

Bychamath bambarandage

28 sept. 2021

1

0

257

Date:

1 janv. 1900

Maintenaint

~ Il y a 125 ans

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