Chapter 9, Problem 9D.2DQ

Interpretation Introduction

Interpretation:

Role of ionization energy and electron affinity in estimating the energy of an atomic orbital to use in a molecular orbital calculation is to be stated.

Concept introduction:

Ionization energy is the amount of energy required to remove a valence electron from an atom to convert it into gaseous cation.  High ionization energy means difficulty in removing the electron.  Electron affinity is amount of energy released when an electron is added to the outermost shell to convert it into gaseous anion.  Both ionization energy and electron affinity play important role in atomic orbitals that form molecular orbitals.