Pharmaceutical Physical Chemistry: Theory and Practices

14

Chemical Bonding

CHAPTER OBJECTIVES

14.1 Introduction

14.2 Valence Bond (VB) Theory

14.3 Molecular Orbital (MO) Theory

14.4 Relative Energies of Molecular Orbitals and Filling of Electrons

14.5 Stability of Molecules

14.6 Molecular Orbital Configurations

14.7 Comparison of Valence Bond (VB) Theory and Molecular Orbital (MO) Theory

One of the notable successes of quantum theory is its explanation of the forces that hold the atoms together. It may be said, without fear of contradiction that there can be neither qualitative nor quantitative understanding of the chemical bond if we restrict ourselves to the concepts of classical mechanics.

 

14.1 INTRODUCTION

We know that most of the substances exist in the form of aggregates of atoms ...