Question

In the compound of type $PO{X}_3,$ P atom shows multiple bonding of the type:-

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

Answer 1

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

In $PO{X}_3,$ $P$ atom is $s{p}^3$ hybridised. $P$ atom has vacant $d$-orbitals and $O$ atom has vacant $p$ orbitals. Thus these $pandd$ orbitals undergo a sideways overlap to give rise to a multiple bond in $PO{X}_3$. Hence $P$ atom shows multiple bonding of the type $p\pi -d\pi$ in the compound $PO{X}_3$.