Are all the five bonds in PCl₅ equivalent ? Justify.

PCl₅ has trigonal bipyramid structure. It has three equatorial bonds inclined at angle of 120° and two axial bonds inclined at an angle of 90°. Since two axial P—Cl bonds are repelled by three bonds pairs each while three equatorial P—Cl bonds are repelled by two bond pairs each, therefore, axial bonds are longer (240 pm) and hence weaker as compared to more stable equatorial bonds (202 pm). Thus, all five P—Cl bonds in PCl₅ are not equivalent.