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23 dez 1897 ano - Argon!

Descrição:

- Argon was suggested to be placed between chlorine and potassium

Adicionado na linha do tempo:

THE PERIODIC TABLEEEE

ByLin beibei
8 fev 2018
0
0
305

Data:

23 dez 1897 ano
Agora
~ 126 years ago
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