Chapter 18, Problem 20E

Interpretation Introduction

Interpretation:

The percentage of $\text{U-238}$ radionuclides in a sample that remains after three half-lives is to be calculated.

Concept introduction:

For all the radioactive samples, the level of radioactivity decreases with time. For the activity of the sample, the amount of time that is required to reduce it by half is known as the half-life. The half-life is represented by the symbol $t_{1/2}$.