Chapter 20, Problem 20.54SP

Interpretation Introduction

Interpretation:

The number of a-particles emitted in 1.0 s from 1.0 ng sample of ${}^{\text{209}}\text{Po}$ should be determined.

Concept introduction:

The nuclear reactions are a type of chemical process which leads to the formation of some new nuclei with the emission of certain particles. Usually, alpha or beta particles or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which show spontaneous decay with time are known as radioactive nuclei. The radioactive decay follows the first-order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay. The radioactive decay follows the first-order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

$\begin{array}{l}{\text{t}}_{\text{1/2}}\text{ = }\frac{\text{0}\text{.693}}{\text{λ}}\\ \text{here:}\\ {\text{t}}_{\text{1/2}}\text{ = half-life}\\ \text{λ = decay constant}\end{array}$