Chemistry, 14.07.2019 01:30 moisealafleur

Aneutral atom of beryllium (be) has an average mass of 9 amu and 4 electrons. how many neutrons does it have? a. 13 b. 5 c. 9 d. 4

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Aneutral atom of beryllium (be) has an average mass of 9 amu and 4 electrons. how many neutrons does...

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