Chapter 19, Problem 19.47SP

Interpretation Introduction

Interpretation:

The final stable product nucleus should be identified for the $Radon-222$ decays by a series of three $\alpha$ emissions and two $\beta$ emissions.

Concept introduction: When an alpha( $\alpha$ ) particle is emitted from any radioactive element, the product has an atomic number two( $2$ ) units less and a mass number four ( $4$

• ) unit less than that of parent element.
When an beta( $\beta$ ) particle is emitted from any radioactive element, the product has an atomic number one( $1$
• ) units greater and a mass number is unchanged than that of parent element.
Given: $Radon-222$ is a radioisotope that having an atomic number of 86. It could be represented as ${}_{86}R{n}^{222}$.