Chapter 7, Problem 7.85QP

Interpretation Introduction

Interpretation:

The exceptions of sigma bond and pi bond rules in ${\text{B}}_{\text{2}}$ and ${\text{C}}_{\text{2}}$ molecules has to be explained.

Concept introduction:

Molecular orbital theory

The atomic orbitals involved in bonding actually combine to form new orbitals that are the property of the entire molecule, rather than of the individual atoms forming the bonds.  These new orbitals are called molecular orbitals.

• In molecular orbital theory, electrons shared by atoms in a molecule reside in the molecular orbitals.
• If the bond length is more then, the bond strength is less