Coordination Compounds Ques 43
43. Among the following complexes the one which shows zero crystal field stabilization energy $(CFSE)$:
[2014]
(a) $\left[\mathrm{Mn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$
(b) $\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$
(c) $\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$
(d) $\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$
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Answer:
Correct Answer: 43.(b)
Solution: (b) Due to $d^5$ configuration $CFSE$ is zero.
BETA
