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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.
Added to timeline:
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By
samuel santa
10 Aug 2021
0
0
111
Date:
jan 1, 1917
Now
~ 108 years ago
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