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The atoms of \(^{64}_{29}\)Cu and \(^{65}_{30}\)Zn have...

The atoms of \(^{64}_{29}\)Cu and \(^{65}_{30}\)Zn have the same number of?

A.

nucleon

B.

electrons

C.

neutrons

D.

protons

View answer & explanation

Correct answer is C

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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