For a nucleus , Z is the atomic number and A is the mass number .Then the mirror nuclei are those, which have the

Options

A. 1. Same A and same Z
B. 2.Same Z but different A
C. 3. Same A but their atomic numbers differ by 1
D. 4. Same A but their atomic numbers differs by 2

Answer

C

Explanation

Mirror nuclei have the same mass number A but their atomic number differ by one . E.g. `""_3Li^7 " and " ""_4Be^7` .
They have same A but atomic numbers are 3 and 4 or they differ by one .