Chapter 1, Problem 73P

Interpretation Introduction

Interpretation: The longer $\text{C-Cl }$ bond should be identified among ${\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}\text{Cl }$&${\text{CH}}_2\text{=CHCl }$.

Concept introduction:

• The more s characters in the orbital, the shorter the bond.
• The more s characters in the orbital, the stronger the bond.
• The more s characters in the orbital, the larger the bond angel.
• A $\text{π}$ bond is weaker than a $\text{σ}$ bond.