Chapter 20.3, Problem 3CP

Interpretation Introduction

Interpretation:

The number of half-lives elapsed is to be determined.

Concept introduction:

There are different types of emissionsduring nuclear reactions. This is due to the presence of unstable nuclei. These are beta particle $\left({}_{-1}^0\beta \right)$, positron $\left({}_{+1}^0\beta \right)$, alpha particle $\left({}_2^4\alpha \right)$, and neutron $\left({}_0^{1}n\right)$.

Half-life of a chemical reaction is defined as the time required to reduce its initial value to the half.