Question

The d-orbitals, which are stabilized in an octahedral magnetic field are

• A. $d_{xy}\text{and}{d}_z^2$
  
• B. $d{x}^2-y_2\text{and}{d}_z^2$
• C. $d_{xy},d_{xz}\text{and}{d}_{yz}$
• D. $d_x^2$ only

Answer 1

The correct option is C $d_{xy},d_{xz}\text{and}{d}_{yz}$

In presence of octahedral field of ligands the five degenerate d-orbitals of metal split into $t_{2g}\text{and}{e}_g$ levels.
$t_{2g}$ level is stabilized and $e_g$ level is destabilized.
$t_{2g}$ level contains $d_{xy},d_{xz}$ and $d_{yz}$ orbitals are stabilized because they have lower energy and $d_{x^2-y^2}\text{and}{d}_z^2$ orbitals are destabilized in an octahedral field.