Among the following complexes the one which shows Zero crystal field stabilizations energy (CFSE)

Among the following complexes the one which shows Zero crystal field stabilizations energy (CFSE)

${[Ni {(H_{2} O)}_{6}]}^{3 +}$
${[F e {(H_{2} O)}_{6}]}^{3 +}$
${[C o {(H_{2} O)}_{6}]}^{2 +}$
${[C o {(H_{2} O)}_{6}]}^{3 +}$

Solution

{[F e {(H_{2} O)}_{6}]}^{3 +}

F e^{+ 3} = 3 d^{5} (t_{2 g}^{1,1, 1} e_{g}^{1,1})

So C.F.S.E is

= [- 0.4 \times 3 + 0.6 \times 2] ∆_{0} = 0

Asked in: NEET 2014

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