Question

Which of the following d orbitals cannot be used to form bonds in $S{O}_3$ ?

• A. $d_{xy}$
• B. $d_{yz}$
• C. $d_{zx}$
• D. $d_{x^2-y^2}$

Answer 1

The correct option is D $d_{x^2-y^2}$

$S{O}_3$ is $s{p}^2$ hybridized, $d$ orbitals are used in $\pi$ bond formation and $d_{x^2-y^2}$ cannot be used to make a $\pi$ bond with a $p$-orbital from the $O$ atom.
$d_{xy}$, $d_{yz}$ or $d_{zx}$ orbitals can form $\pi$ bond.