Chapter 9, Problem 9.15P

Interpretation Introduction

Interpretation:

The length of bond length of ${\text{C}}_{\text{2}}$ molecule in the excited state has to be given.

Concept Introduction:

Bond length:

The distances between the centers of bonded atoms are called bond lengths.  Bond order affects the bond length greater the bond order shorter is the bond length.

Bond order $\text{=}\frac{\left({\text{N}}_{\text{b}}\right)\text{-}\left({\text{N}}_{\text{a}}\right)}{\text{2}}$

Where, ${\text{N}}_{\text{b}}$ is number of electrons in bonding orbital.

${\text{N}}_{\text{a}}$ is number of electrons in antibonding orbital