Chapter 6, Problem 6.66SP

Interpretation Introduction

Interpretation:

The relationship between electron affinity of singly charged cation and ionization energy of neutral atom should be determined.

Concept introduction:

Ionization energy is amount of energy needed to remove electron from isolated, neutral and gaseous atom. It is denoted by $E_{\text{i}}$. Energy needed to remove first electron from neutral atom is first ionization energy, represented by $E_{\text{i1}}$. Energy needed to remove electron from monoatomic cation is second ionization energy $\left(E_{\text{i2}}\right)$.

Change in energy due to addition of electron to neutral isolated and gaseous atom is electron affinity. It is represented by $E_{\text{ea}}$. Neutral atom becomes anion after addition of electron to it. More negative $E_{\text{ea}}$ indicates greater tendency to accept electron and vice-versa.