Question

In an octahedral structure, the pair of d-orbitals involved in $d^{2}s{p}^3$ hybridisation is :

• A. $d_{x^2-y^2},d_{z^2}$
• B. $dxz,d_{x^2-y^2}$
• C. $d_{z^2},d_{xz}$
• D. $d_{xy},d_{yz}$

Answer 1

The correct option is A $d_{x^2-y^2},d_{z^2}$

In the formation of $d^{2}s{p}^3$ hybrid orbitals, two $(n-1)d$ orbitals of $e_g$ set i.e., $(n-1)d_{z^2}$ and $(n-1)d_{x^2-y^2}$ orbitals, one ns and three np $(n{p}_x,n{p}_y\text{and}n{p}_z)|$ orbitals combine together and form six $d^{2}s{p}^3$ hybrid orbitals.

C.N. of metal	6	6
Type of hybridisation	$s{p}^3{d}^2$	$d^{2}s{p}^3$
Shape of complex	Octahedral	Octahedral
Type of d-orbital	$d_{x^2-y^{2^{\prime }}}{d}_{z^2}$	$d_{x^2-y^{2^{\prime }}}{d}_{z^2}$