Chapter 12, Problem 12.89AP

Interpretation Introduction

Interpretation: A unit cell is given to consist of a cube that has an ion of element $\text{X}$ at each corner, an ion of element $\text{Y}$ at the centre of the cube, and an ion of element $\text{Z}$ at the center of each face. The formula of the compound is to be stated.

Concept introduction: The cubic closest-packed has eight atoms at the corners of the cube and six atoms at the centers of each face of the cube. The big atoms create the void space in the ccp arrangement and this space is occupied by the small atoms.

To determine: The formula of the given unknown compound.