Chapter 9, Problem 74E

Interpretation Introduction

Interpretation: Empirical formula of the compound to be found.

Concept introduction:

Unit cell: In a crystal, the smallest repeating units of lattice are known as unit cell.

Some examples for unit cell are simple cube, face centered cube and body centered cube.

Ionic compound: The chemical compounds that are consist of ions such as cations and anions which are held together by electrostatic force.

For example: Sodium Chloride $\text{(NaCl)}$. Sodium and Chloride form ionic compound.

In Sodium chloride, Sodium atom which gives electron to Chlorine atom to turns Sodium ion ( ${\text{Na}}^{\text{+}}$) although chlorine atom accept the electron from sodium atom to turns chlorine ion ( ${\text{Cl}}^{\text{-}}$).