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jan 1, 1917 - Clasificacion de los elementos

Description:

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.

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Bysamuel santa
10 Aug 2021
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Date:

jan 1, 1917
Now
~ 108 years ago
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