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1 jan 1900 ano - Radioactivity

Descrição:

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

Adicionado na linha do tempo:

Periodic Table

Bychamath bambarandage

28 set 2021

1

0

262

Data:

1 jan 1900 ano

Agora

~ 125 years ago

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