Chapter 21, Problem 36E

Interpretation Introduction

Interpretation: The time required to decay $\text{2}\text{.00}\text{mg}$ sample of radium $-230$ into $\text{0}\text{.25}\text{mg}$ is given to be $\text{4}\text{hr}\text{39}\text{min}$ . The half life of radium $-230$ is to be calculated.

Concept introduction: The half life of a nuclear reaction is the time required by a radioactive element to decay to half of its initial concentration.

To determine: The half life of the radium $-230$.