Question

Relative to the average energy in the spherical crystal field, the $e_g$ orbitals in octahedral field is

• A. raised by $\left(2/5\right){\Delta }_o$
• B. lowered by $\left(4/5\right){\Delta }_o$
• C. raised by $\left(3/5\right){\Delta }_o$
• D. lowered by $\left(3/5\right){\Delta }_o$

Answer 1

The correct option is C raised by $\left(3/5\right){\Delta }_o$

$e_g$ orbitals $(d_{z^2},d_{x^2-y^2})$ have higher energies by $\left(3/5\right){\Delta }_o$ then $t_{2g}.$