In which of the following molecules / ions, all the bonds are not of equal length.

$\left(1\right)$Hybridization : ${\mathrm{sp}}^3$ 

$\mathrm{Shape}$:Regular tetrahedron 

All $\mathrm{Si}–\mathrm{F}$ bonds are of equal length.

$\left(2\right)$ Hybridization : ${\mathrm{sp}}^3\mathrm{d}$

$\mathrm{Shape}$ : See-saw Axial 

$\mathrm{S}–\mathrm{F}$ bond is longer than equatorial $\mathrm{S}–\mathrm{F}$ bond.

$\left(3\right)$ Hybridization : ${\mathrm{sp}}^3{\mathrm{d}}^2$

$\mathrm{Shape}$ : Square planar Axial 

$\mathrm{Xe}–\mathrm{F}$ bonds are of equal length.

$\left(4\right)$ Hybridization : ${\mathrm{sp}}^3$ 

$\mathrm{Shape}$:Regular tetrahedron 

All $\mathrm{B}-\mathrm{H}$ bonds are of equal length.