Statement - I :In PCl₅ axial P–Cl bonds are weaker than equatorial P–Cl bonds.
Statement - II :In PCl₅ axial P–Cl bonds experience greater repulsion from equatorial P–Cl bonds than the repulsion among equatorial P–Cl bonds.

There are two types of bonds in PCl₅, axial and equatorial bonds.

The bond length of the axial bond is longer than the equatorial bond because the axial bond experiences more repulsion than the equatorial bond. This makes the axial bond relatively weaker than the equatorial bond.

Hence, both statements I and II are correct.