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1 gen 1917 anni - Clasificacion de los elementos

Descrizione:

Entre 1917 y 1929, el químico alemán Johan Dobereiner clasificó a algunos elementos en grupos de tres denominados triadas, ya que tenían propiedades químicas similares.

Aggiunto al nastro di tempo:

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Bysamuel santa
10 ago 2021
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148

Data:

1 gen 1917 anni
Adesso
~ 108 years ago
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