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10 sett 2017 anni - PRESENT

Descrizione:

Now, we have a lot of key ideas about atoms, all derived from the discoveries of past scientists. We now know that electrons orbit the nucleus in "electron clouds", and the nucleus is composed of protons and neutrons.

Aggiunto al nastro di tempo:

Data:

10 sett 2017 anni
Adesso
~ 8 years ago