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

Mostafa Labib asked Feb 12, 2023

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Mostafa Labib asked Feb 12, 2023

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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.

YogevSitton answered Feb 19, 2023

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