Question

Two axial bonds of pcl5 are longer than equatorial bonds

Answer 1

in pcl5 the axial bonds suffer repulsion from the equatorial bonds so they become longand weak but in pf5 the axialand equatorial bonds are of nearly equal length because the repulsion between thebonds tries to make axial bonds longer but fluorine being most electronegative makes the P-F bond shorter as a result ...

Answer 2

Two axial bond of PCl5.
I Hope it help you :-)