Chapter 3, Problem 3H.24E

(a)

Interpretation Introduction

Interpretation:

Coordination number of rubidium and chloride ions in rock salt type structure and cesium chloride type structure has to be determined.

Concept Introduction:

Unit cell represents lattice structure if it stacked together repeatedly with no gaps and rotations. This can also produce whole crystals by stacking method. Basic type of unit cells is as follows:

1. Simple cubic (SC).

2. Body centered cubic (BCC).

3. Face centered cubic (FCC).

(b)

Interpretation Introduction

Interpretation:

Whether larger hole is occupied by rubidium ions in rock salt or cesium chloride structure in solid rubidium chloride has to be determined.

Concept Introduction:

Refer to part (a).