S C Kheterpal, S N Dhawan and, P N Kapil Solutions for Chapter: Chemical Bonding and Molecular Structure, Exercise 3: ADDITIONAL QUESTIONS

Using M.O. diagram and occupancy of electrons in orbitals, arrange the following molecular species in increasing order of their stabilities:
(i) ${\mathrm{H}}_2$ (ii) ${{\mathrm{H}}_2}^{-}$ (iii) ${{\mathrm{H}}_2}^{+}$

What information does M.O. theory provide for ${\mathrm{O}}_2,{\mathrm{O}}_2^{+},{\mathrm{O}}_2^{-},{\mathrm{O}}_2^{2-}$molecular species with regard to bond length?

Discuss the shapes of molecular orbitals formed by the combination of the following atomic orbitals :

$2{\mathrm{p}}_{\mathrm{z}}+2{\mathrm{p}}_{\mathrm{z}}$

Illustrate bonding and antibonding molecular orbitals based on homonuclear dihydrogen molecule.

Account for the following: ${\mathrm{NH}}_3$ has higher boiling point than ${\mathrm{PH}}_3$.

Explain the following observations: ${\mathrm{O}}_2^{-}$ is paramagnetic but ${\mathrm{O}}_2^{2-}$ is not.

Predict their paramagnetic behaviour. (i) ${\mathrm{N}}_2$, (ii) ${{\mathrm{N}}_2}^{+}$, (iii) ${{\mathrm{N}}_2}^{-}$ (iv) ${{\mathrm{N}}_2}^{2-}$
 

Which of these shows the highest paramagnetism :(i) ${\mathrm{N}}_2$, (ii) ${{\mathrm{N}}_2}^{+}$, (iii) ${{\mathrm{N}}_2}^{-}$ (iv) ${{\mathrm{N}}_2}^{2-}$.