Chapter 8.5, Problem 1PE

Interpretation Introduction

Interpretation: To find whether $Ar$ forms the anion $A{r}^{-}$

Concept Introduction:

Electron Affinity: It is energy change taking place when one electron is added to an atom which is neutral in its gaseous state forming an anion.

Noble gases are highly stable elements having 8 valence electrons. The outer electronic configuration of noble gases is ${\text{ns}}^{\text{2}}{\text{np}}^6$