Describe the hybridisation in case of PCl5. Why are the axial bonds longer as compared to equatorial bonds?

(a) Why does type of overlap given in the following figure not result in bond formation (b) Account for the following: (i) Water is a liquid while H2S is a gas (ii) NH3 has higher boiling point than PH3. (c) Why are the axial bonds longer compared to equatorial bonds?

TextValence Bond Theory for Covalent BondHybridisation Involving d Orbitals: sp3d, sp3d2Hydrogen Bond and Its Types

Attempt any five: (a) Which out of NH3 and NF3 has higher dipole moment and why? (b) why BeH2 molecule has a zero dipole moment although the Be–H bonds are polar (c) Write the resonance structures for NO3⁻ (d) Although geometries of NH3 and H2O molecules are distorted tetrahedral, bond angle in water is less than that of ammonia. Discuss (e) What is meant by hybridisation of atomic orbitals? (f) Describe the change in hybridisation (if any) of the Al atom in the following reaction. AlCl3 + Cl⁻ → AlCl4⁻ (g) In PCl5, why are the axial bonds longer as compared to equatorial bonds?

TextPolar Character of Covalent Bond and Dipole MomentResonance Structures of MoleculesVSEPR Theory and Geometry of MoleculesHybridisation of Orbitals: sp, sp2, sp3Hybridisation Involving d Orbitals: sp3d, sp3d2