Reason (R): All have no unpaired electrons and so they are diamagnetic.
A. Both (A. and (R) are correct and (R) is the correct explanation of(A).
B. Both (A) and (R) are correct but (R) is not the correct explanation of(A).
C. (A) is correct but (R) is wrong.
D. (A) is wrong but (R) is correct.
Answer:A
Reason (R): All have no unpaired electrons and so they are diamagnetic.
A. Both (A. and (R) are correct and (R) is the correct explanation of(A). B. Both (A) and (R) are correct but (R) is not the correct explanation of(A). C. (A) is correct but (R) is wrong. D. (A) is wrong but (R) is correct.