Question

Give reason all bonds in ${SF}_4$ are not equivalent.

Answer 1

$S{F}_4$ has $s{p}^{3}d$ hybridization with one lone pair.

Molecular Geometry is Trigonal Bipyranidal.

Shape: See-saw.

(Refer to Image)

Two $S-F$ bonds are smaller as they are at equitorial position and other 2 $SF$ bonds are at axial position, hence are longer, as the axial bonds suffer more repulsion.