Chapter 10, Problem 10.33E

Interpretation Introduction

Interpretation:

The time taken for $\text{70}\text{.-mCi}$ dose of Gold-$198$ to decay to an activity of $\text{2}\text{.2}\text{mCi}$ is to be calculated.

Concept introduction:

The type of radioactive decay in which an alpha particle is emitted by the nucleus of an atom such that an atom of another element is produced after decay is known as alpha decay. An alpha particle is a helium nucleus. The radioactive decay in which a positron or an electron is emitted is known as beta decay.