In which case is a d^7 complex species more s | vedclass

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(A) For a $d^7$ metal ion in an octahedral field,the Crystal Field Stabilization Energy $(CFSE)$ is calculated as follows:$1$. For a strong field liga

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Strong field ligand with octahedral geometry

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(A) For a $d^7$ metal ion in an octahedral field,the Crystal Field Stabilization Energy $(CFSE)$ is calculated as follows:$1$. For a strong field ligand (low spin),the configuration is $t_{2g}^6 e_g^1$. The $CFSE$ is $(-0.4 	imes 6 + 0.6 	imes 1) \Delta_o = -1.8 \Delta_o$.$2$. For a weak field ligand (high spin),the configuration is $t_{2g}^5 e_g^2$. The $CFSE$ is $(-0.4 	imes 5 + 0.6 	imes 2) \Delta_o = -0.8 \Delta_o$.Since $-1.8 \Delta_o$ is more negative than $-0.8 \Delta_o$,the strong field ligand complex is more stable.

In which case is a $d^7$ complex species more stable?

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