Chapter 21, Problem 21.21E

Interpretation Introduction

Interpretation:

The validation of the fact that monoatomic elements prefer to have either hexagonal close-packed or face-centered cubic crystal lattices is to be stated.

Concept introduction:

A unit cell of the crystal is the three-dimensional arrangement of the atoms present in the crystal. The unit cell is the smallest and simplest unit of the crystal which on repetition forms an entire crystal. Unit cell can be a cubic unit cell or hexagonal unit cell. The classification of a unit cell depends on the lattice site occupied by the atoms.