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If a neutral atom of beryllium has 4 protons and 5 neutrons, what is the mass number of the atom?

If a neutral atom of beryllium has 4 protons and 5 neutrons, what is the mass number of the atom?
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1 vote
If a neutral atom of beryllium has 4 protons and 5 neutrons, what is the mass number of the atom?

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User Atrujillofalcon
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8.8k points

1 Answer

3 votes
9 is the mass of the atom
answered
User Vicktoria
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8.2k points
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