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1 gen 1913 anni - Niels Bohr : He said that the nucleus lies in the centre of the model and is made up of a certain number of protons and neutrons. Also,for each of the outer layers are made up of a certain amount of electrons.
Aggiunto al nastro di tempo:
10 set 2017
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Atomic Timeline
Data:
1 gen 1913 anni
Adesso
~ 111 years ago