Chapter 25, Problem 61IAE

Interpretation Introduction

Interpretation:

The amount of radioactivity shown by 5.10 mg $Th$ having a half-life of $7.9\times {10}^3$ years needs to be calculated.

Concept introduction:

During nuclear instability, some of the particles are emitted from nuclei this activity is known as radioactivity and half-life can be calculated from the formula written as follows:

$t_{\frac{1}{2}}=\frac{0.693}{\lambda }$.

Here, $\lambda$ is decay constant.