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1 ene 1912 año - Fredrick Soddy-Elements in different forms

Descripción:

Proposed that the same elements can be in different forms. The nuclius can have the same number of protons but different numbers of neutrons.

Añadido al timeline:

16 oct 2017
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fecha:

1 ene 1912 año
Ahora mismo
~ 113 years ago