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}^{-}} $ .



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