Chapter 21, Problem 21.22QP

Interpretation Introduction

Interpretation: At room temperature, the reason for ${\text{Br}}_{\text{2}}$ to be a liquid and ${\text{Cl}}_2$ to be a gas is to be stated.

Concept introduction: Depending upon the intermolecular attractions, substances are classified into solid, liquid and gaseous states

To determine: An explanation corresponding to the fact ${\text{Br}}_{\text{2}}$ is a liquid and ${\text{Cl}}_2$ is a gas at room temperature.