all the bond of PCl5 are not equivalent .explain? plz give scientific answer
Answers
In PCl5, there are 3 chlorines in equatorial plane and 2 chlorines in axial plane. The 3 chlorines of equatorial plane repel the 2 incoming chlorines of axial plane. This repulsion is because the angle between an axial chlorine and an equatorial chlorine is 90°. You can ask, "Why don't the equatorial chlorines repel each other ?". Well !, that's because the angle between the equatorial chlorines is 120° which is way more less than 90°. So, the axial bonds are larger than the equatorial bonds.
See the attachments, I've also answered your question on bond angles of PH3 and NH3.
N has higher electronegativity than P, so the electrons of the N-H bonds are much more closer to N, whereas the electrons of the P-H bonds are not much closer to P as compared to that of N-H bonds in NH3. Since, the electrons in N-H bonds are very much closer to N, so there would be repulsion between the shared electrons of one bond and the shared electrons of another bond. So, the bond angle between N-H bonds increases in NH3.
I think this question is pretty well answered at this point.
