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An atom has 5 protons and 7 neutrons. What is its mass number of amu?

An atom has 5 protons and 7 neutrons. What is its mass number of amu?
asked 9.2k views
2 votes
An atom has 5 protons and 7 neutrons. What is its mass number of amu?

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User Ezeke
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7.6k points

1 Answer

3 votes
you add the protons and neutrons together, so the mass = 12
answered
User Harish Gokavarapu
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8.0k points
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