Chapter 9, Problem 9.24QP

(a)

Interpretation Introduction

Interpretation:

Stability of the compounds $LiF$ and $Li{F}_2$ in solid state has to be compared and the same has to be justified.

Concept Introduction:

The energy released when gaseous state ions of unlike charges that are infinitely farther apart combine to form a stable ionic solid is called Lattice energy.  Conversely, the energy required to break the electrostatic force of attraction between the ions of unlike charges in the ionic solid and revert them to gaseous state is also termed as Lattice energy of an ionic solid.

Greater the lattice energy of a compound greater will be its stability.

(b)

Interpretation Introduction

Interpretation:

Stability of the compounds $C{s}_{2}O$ and $CsO$ in solid state has to be compared and the same has to be justified.

Concept Introduction:

The energy released when gaseous state ions of unlike charges that are infinitely farther apart combine to form a stable ionic solid is called Lattice energy.  Conversely, the energy required to break the electrostatic force of attraction between the ions of unlike charges in the ionic solid and revert them to gaseous state is also termed as Lattice energy of an ionic solid.

Greater the lattice energy of a compound greater will be its stability.

(c)

Interpretation Introduction

Interpretation:

Stability of the compounds $CaB{r}_2$ and $CaB{r}_3$ in solid state has to be compared and the same has to be justified.

Concept Introduction:

The energy released when gaseous state ions of unlike charges that are infinitely farther apart combine to form a stable ionic solid is called Lattice energy.  Conversely, the energy required to break the electrostatic force of attraction between the ions of unlike charges in the ionic solid and revert them to gaseous state is also termed as Lattice energy of an ionic solid.

Greater the lattice energy of a compound greater will be its stability.