Chapter 19, Problem 9E

Interpretation Introduction

Interpretation:

The number of stable isotopes of elements of the first transition series is given. The reason for only one stable isotope of $\text{Sc,}\text{V}$ and $\text{Mn}$ while several isotopes for the other elements is to be stated.

Concept introduction:A nucleus is stable only when forces between the protons and neutrons are balanced. When forces are not balanced, then the nucleus will become unstable and tends to decay.

To determine:An explanation corresponding to the fact that $\text{Sc,}\text{V}$ and $\text{Mn}$ has only one stable isotope while the other elements have several.