Question:
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 :
Correct Option: 4,
Solution:
$\mathrm{CFSE}=0.4 \Delta_{0}$
$=0.4 \times \frac{20300}{83.7}$
$=97 \mathrm{~kJ} / \mathrm{mol}$