MCQ
Isotopes are atoms having
  • 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

Answer

Correct option: A.
Same number of protons but different number of neutrons
a
(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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