Question

Consider, $PF_5,BrF_5,PCl_3,SF_6,[ICl_4]^–,ClF_3 and\ IF_5$.
Amongst the above molecule(s)/ion(s), the number of molecule(s)/ion(s) having $sp^3d^2$ hybridisation is _____.

Answer 1

Hybridisation of Central atom
$PF_5⟶sp^3d$
$BrF_5⟶sp^3d^2$
$PCl_3⟶sp^3$
$SF_6⟶sp^3d^2$
$ICl_4^⊖⟶sp^3d^2$
$CIF_3⟶sp^3d$
$IF_5⟶sp^3d^2$

So, the answer is $4$.