Question

In compounds of the type $PO{X}_3$, the $P$ atom shows multiple types of bonding. Select the right type from the options given:

• A. $p\pi -d\pi$
• B. $d\pi -d\pi$
• C. $p\pi -p\pi$
• D. No multiple bonding exists

Answer 1

The correct option is A $p\pi -d\pi$

$PO{X}_3$ has a $s{p}^3$ hybridized $P$ atom that has vacant d-orbitals. The p-orbital of the $O$ atom and the d-orbital of the $P$ atom undergoes $p\pi -d\pi$ bonding.