The electronic spectrum of


The electronic spectrum of $\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$ shows a single broad peak with a maximum at $20,300 \mathrm{~cm}^{-1}$. The crystal field stabilization energy (CFSE) of the complex ion, in $\mathrm{kJ} \mathrm{mol}^{-1}$, is :

  1. $242.5$

  2. $83.7$

  3. $145.5$

  4. 97

Correct Option: 4,


$\mathrm{CFSE}=0.4 \Delta_{0}$

$=0.4 \times \frac{20300}{83.7}$

$=97 \mathrm{~kJ} / \mathrm{mol}$

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