exact answers only
In case of PCl5 the bond pairs present on the axial position suffer more repulsion than that of bond pairs present on the equatorial position.
Actually each bond pair present at the axial position has to face the repulsion of three equatorial bond pairs, due to this the bond is stretched and hence the bond length increases.
but in case of equatorial bonds, the repulsion are lesser as compared to the axial bonds so they are shorter.
I am M.Sc (chemistry ) from punjabi university. I am a science teacher with expertise in chemistry, with 8 years of experiance in teaching. i am getting a handsome salary , now i wish to help out the people who need me UNCONDITIONALLY. and I am constantly working on creating a new and easy way of learning the tough things in an effective way. I am constantly working to make authentic and reliable information to be shared with my students and widen the horizons of knowledge. View more posts
The Unconditional Guru