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1 Jan 1900 Jahr - Radioactivity

Beschreibung:

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

Zugefügt zum Band der Zeit:

Periodic Table

Bychamath bambarandage

28 Sep 2021

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259

Datum:

1 Jan 1900 Jahr

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~ 125 years ago

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