Chapter 11, Problem 11.74QE

(a)

Interpretation Introduction

Interpretation:

The mass of the unit cell has to be calculated.

Concept Introduction:

The mass of the unit cell is given by,

Mass of the unit cell=$\left\{\text{total}\text{number}\text{of}\text{atoms}\text{belong}\text{to}\text{that}\text{unit}\text{cell}\right\}\text{×}\left\{\text{mass}\text{of}\text{one}\text{atom}\right\}$

(b)

Interpretation Introduction

Interpretation:

The volume of the unit cell has to calculated

Concept Introduction:

Volume of the cubic unit cell is the length of the edge raised to the third power

  ${\text{Volume=a}}^{\text{3}}$

Where a is the edge length of the unit cell

(c)

Interpretation Introduction

Interpretation:

The density of the unit cell has to be calculated.

Concept Introduction:

The density of a substance is given by the ratio of its mass to its volume,

  $\text{Density=}\frac{\text{Mass}\text{of}\text{the}\text{unit}\text{cell(g)}}{\text{Volume}\text{of}\text{the}\text{unit}{\text{cell(cm}}^{\text{3}}\text{)}}$