Question

The crystal field splitting energy for octahedral $({\Delta }_0)$ and tetrahedral $({\Delta }_t)$complexes is related as

• A. ${\Delta }_t=-\frac{1}{2}{\Delta }_0$
• B. ${\Delta }_t=-\frac{4}{9}{\Delta }_0$
• C. ${\Delta }_t=-\frac{3}{5}{\Delta }_0$
• D. ${\Delta }_t=-\frac{2}{5}{\Delta }_0$
• E. ${\Delta }_t=-\frac{9}{4}{\Delta }_0$

Answer 1

Answer: (B)

In tetrahedral complexes, the number of ligands is less than the octahedral complexes. Hence, the value of crystal field splitting energy of tetrahedral complexes $({\Delta }_t)$ is nearly half the value for octahedral complexes $({\Delta }_0).{\Delta }_{t}and$${\Delta }_0$ are related as
${\Delta }_t=-\frac{4}{9}{\Delta }_0$