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How do you find the atomic mass mass number of an atom? A.Add the number of protons and neutrons together B. Subtract the number of protons by the number of neutrons C. add the number of protons and elections
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How do you find the atomic mass mass number of an atom?

A.Add the number of protons and neutrons together

B. Subtract the number of protons by the number of neutrons

C. add the number of protons and elections together

D. Subtract the number of protons by the number of neurons

User Rfestag
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To calculate the atomic mass of a single atom, add up the mass of protons and neutrons.

So, your answer would be A) add the number of protons and neutrons
User Boggy
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