Beryllium (be) has an atomic number of 4 and an atomic mass of 9. beryllium has
4 elect...
Physics, 08.10.2019 23:50 CoolxBreeze
Beryllium (be) has an atomic number of 4 and an atomic mass of 9. beryllium has
4 electrons
5 electrons
9 electrons
13 electrons
Answers: 3
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