Chapter 21, Problem 21.3VP

Interpretation Introduction

Interpretation: The element that is formed from decay of $\text{uranium}-238$ from the given highlighted elements is to be identified.

Concept introduction: $\text{Uranium}-238$ decomposes in the given manner,

${}_{92}^{238}\text{U}{\to }_{90}^{234}\text{Th}{\to }_{91}^{234}\text{Pa}{\to }_{92}^{234}\text{U}{\to }_{90}^{230}\text{Th}{\to }_{88}^{226}\text{Ra}$

To determine: The element that is formed from decay of $\text{uranium}-238$ from the given highlighted elements.