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A copper atom has 29 protons and 36 neutrons. What is the mass number of this atom in amu?​
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25 votes
A copper atom has 29 protons and 36 neutrons. What is the mass number of this atom in amu?​

User Mostafa Labib
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1 Answer

19 votes
19 votes
The Mass number is 65, Copper-65

To find the mass number you add the number of protons to the number of neutrons.
User YogevSitton
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