Chapter 12.6, Problem 12.12P

Interpretation Introduction

Interpretation:

The decay constant $\left(\text{k}\right)$ of cesium-137 has to be calculated.

Concept Introduction:

Half-life period:

It is the time required for the reactant (substrate) concentration reduces to one-half of its initial concentration.

$\begin{array}{l}{\text{t}}_{\text{1/2}}\text{=}\frac{\text{0}\text{.693}}{\text{k}}\\ \text{where,}\\ {\text{t}}_{\text{1/2}}\text{-}\text{half-life}\text{time}\\ \text{k}\text{-}\text{rate}\text{constant}\end{array}$