Chapter 3, Problem 3H.9E

(a)

Interpretation Introduction

Interpretation:

Density of aluminum has to be determined.

Concept Introduction:

Density of unit cell is as follows:

  $d=\frac{ZM}{a^3{N}_{\text{A}}}$        (1)

Here,

$Z$ is atoms in unit cell.

$M$ is molar mass.

$a$ is edge length of unit cell.

$N_{\text{A}}$ is Avogadro number.

(b)

Interpretation Introduction

Interpretation:

Density of potassium has to be determined.

Concept Introduction:

Refer to part (a).