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Physics, 01.12.2020 01:00 Eagle3077

Beryllium (Be) has an atomic number of 4 and an atomic mass of 9. Beryllium has . 9 electrons
4 electrons
5 electrons
13 electrons

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Beryllium (Be) has an atomic number of 4 and an atomic mass of 9. Beryllium has . 9 electrons
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