D-And F-Block Elements Ques 281
Question: Which of the following has the maximum number of unpaired d-electrons
[BIT 1992; CBSE PMT 1999]
Options:
A) $ Zn $
B) $ F{{e}^{2+}} $
C) $ N{{i}^{3+}} $
D) $ C{{u}^{+}} $
Show Answer
Answer:
Correct Answer: B
Solution:
$ F{{e}^{+2}}-3d^{6}4s^{0}-4 $ unpaired $ {{e}^{-}} $ .