The axial bonds are longer as compared to equitorial bonds in pcl5 whereas in sf6 both axial bonds and equitorial both have the same bond length
ANSWER- Dear student,
The hybridization of the P in PCl5 is sp3d and the hybridization of the S in SF6 is sp3d2.
- PCl5 has trigonal bipyramidal geometry. In this case, the axial bonds are slightly longer than the equatorial bonds. This is because the axial bonds experience greater repulsion from other bonds than the equatorial bonds while SF6 has an octahedral structure in which all the bonds have the same length because all bonds experience similar repulsion from other bonds.
That's why, the axial bonds are longer as compared to equitorial bonds in PCl5 as compared to SF6