Problem

Column-I (Catalyst involved in process)	Column-II (Process)
(A) $\text{SF}_4$	(P) Can act as Lewis acid as well as Lewis base
(B) $\text{AsH}_3$	(Q) Central atom belongs to 16th or 17th group
(C) $\text{ClO}_4^-$	(R) Non-axial set of $d$ -orbitals do not use in bonding
(D) $\text{SbCl}_4^-$	(S) Only one type bond angle
	(T) Oxidation state of central atom is +4 or greater than +4