The octahedral complex of a metal ion M^{3+} | vedclass

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(B) The crystal field splitting energy $(\Delta_o)$ is inversely proportional to the wavelength $(\lambda)$ of the light absorbed: $\Delta_o = \frac{h

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$L_1 < L_3 < L_2 < L_4$

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(B) The crystal field splitting energy $(\Delta_o)$ is inversely proportional to the wavelength $(\lambda)$ of the light absorbed: $\Delta_o = \frac{hc}{\lambda}$.Stronger ligands cause greater splitting and thus absorb light of shorter wavelengths.The order of wavelengths for the given colors is: $ ext{Red} (L_1) > ext{Yellow} (L_3) > ext{Green} (L_2) > ext{Blue} (L_4)$.Since ligand strength $\propto \frac{1}{\lambda}$,the increasing order of ligand strength is: $L_1 < L_3 < L_2 < L_4$.

The octahedral complex of a metal ion $M^{3+}$ with four monodentate ligands $L_1, L_2, L_3$ and $L_4$ absorb wavelengths in the region of red,green,yellow and blue,respectively. The increasing order of ligand strength of the four ligands is:

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