Chapter 12, Problem 12.17QP

Interpretation Introduction

Interpretation: The difference between cubic closest-packed and hexagonal closest-packed arrangements of identical spheres is to be stated.

Concept introduction: The abbreviated form of cubic closest-packed structure is $\text{CCP}$ and it is the two or three dimensional arrangement of layers in a unit cell that follows $\text{ABCABCABC}\mathrm{......}$ type of packing pattern.

The abbreviated form of hexagonal closest-packed structure is $\text{HCP}$ and it is the two or three dimensional arrangement of layers in a unit cell that follows $\text{ABABAB}\mathrm{......}$ type of packing pattern.

To determine: The difference between cubic closest-packed and hexagonal closest-packed arrangements of identical spheres.