Reason (R): They have unpaired electrons and are paramagnetic.
A. Both (A. and (R) are correct but (R) is not the correct explanation of(A).
B. Both (A) and (R) are correct and (R) is the correct explanation of(A).
C. (A) is correct but (R) is wrong.
D. (A) is wrong but (R) is correct.
Answer:B
Reason (R): They have unpaired electrons and are paramagnetic.
A. Both (A. and (R) are correct but (R) is not the correct explanation of(A). B. Both (A) and (R) are correct and (R) is the correct explanation of(A). C. (A) is correct but (R) is wrong. D. (A) is wrong but (R) is correct.