Chapter 21, Problem 21.57QP

Interpretation Introduction

Interpretation: It should be described the properties that make radon an indoor pollutant and its ( ${}^{\text{222}}\text{Rn}$) hazardous effects if it had a longer half-life.

Concept Introduction:

• Pollutants: The substance present in the environment in harmful concentration and cause pollution, and it will damaging the growth rate of species by interfering with the food chains, affect the health, comfort and property. 
• Indoor pollutants: The substance which present with in home and industries and cause pollution. Radon is a major indoor pollutant.
• Half-life is the time required for a quantity to reduce to half its initial value. Hazardous effect of substance will increases with increase in half-life period.

To explain: properties that make radon an indoor pollutant