The atoms of \(^{64}_{29}\)Cu and \(^{65}_{30}\)Zn have the same number of?
The atomic mass is written as superscript = proton number + neutron number
- Atomic mass of Cu is 64 = 29 + 35
- Atomic mass of Zn is 65 = 30 + 35
Proton number is written as subscript
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