Chemistry, 09.02.2021 09:40, neyssa83

The Beryllium (Be) atom has 4 protons, 4 electrons (2 valence e- ), and 5 neutrons. It is on the 2nd period, so it has two electron shells

The Beryllium (Be) atom has 4 protons, 4 electrons (2 valence e- ), and 5 neutrons. It is on the

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The Beryllium (Be) atom has 4 protons, 4 electrons (2 valence e- ), and 5 neutrons. It is on the 2...