NEET Physics Nuclei Questions Solved

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Isotopes are atoms having 
(a) Same number of protons but different number of neutrons
(b) Same number of neutrons but different number of protons
(c) Same number of protons and neutrons
(d) None of the above

(a) For isotopes Z is same and A is different. Therefore the number of neutrons A-Z will also be different.

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