What is meant by the term bond order? Calculate the bond order of: N2, O2, O+2,O–2,
Define hydrogen bonds. Is it weaker or stronger than the van der Waals forces?
Describe the hybridization in case of PCl5. Why are the axial bonds longer as compared to equatorial bonds?
Write the significance of a plus and a minus sign shown in representing the orbitals.
Compare the relative stability of the following species and indicate their magnetic properties; O2,O2+ ,O2– (superoxide), O22– (peroxide)
Use molecular orbital theory to explain why the Be2 molecule does not exist.
For example, in C2H6 (ethane), there are seven bond pairs but no lone pair present
Explain the formation of H2 molecule on the basis of valence bond theory. Write the important conditions required for the linear combination of atomic orbitals to form molecular orbitals.
Distinguish between a sigma and a pi bond.
What do you understand by bond pairs and lone pairs of electrons? Illustrate by giving one example of each type.