Chemistry - CHEMICAL BONDING Question with Solution | TestHub

As in solid state, ${\mathrm{PCl}}_5$ exists as an ionic solid ${\left[{\mathrm{PCl}}_4\right]}^{+}{\left[{\mathrm{PCl}}_6\right]}^{-}$in which the cation, ${\left[{\mathrm{PCl}}_4\right]}^{+}$ is tetrahedral and the anion, ${\left[{\mathrm{PCl}}_6\right]}^{-}$is octahedral. ${\mathrm{PCl}}_5$ in gaseous state has trigonal bipyramidal structure in which three equatorial bonds are equivalent, while the two axial bonds are longer than equatorial bonds due to more bond pair repulsion.