Chapter 6, Problem 6.69SP

Interpretation Introduction

Interpretation:

Whether $\text{Br}$ or ${\text{Br}}^{-}$ has more negative electron affinity should be determined.

Concept introduction:

Change in energy when electron is added to neutral isolated gaseous atom is called electron affinity. It is denoted 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.