Chapter 11.2, Problem 11.2BFP

(a)

Interpretation Introduction

Interpretation: The hybridization of each number $\text{C}$ , $\text{N}$ and $\text{O}$ atoms should be determined.

Concept introduction:

The hybridization of an atom indicates the molecular geometry of the molecule. The following can be used to check for hybridization:

  $\text{Hybridization = Number of sigma bonds + Number of lone pair}$ .

The molecular geometry of molecules with lone pairs on the central atom is given by VSEPR theory.

(b)

Interpretation Introduction

Interpretation: The number of $\sigma$ and $\pi$ bonds in the caffeine molecule should be determined.

Concept introduction:

Hybridization of an atom indicates the molecular geometry of the molecule. The following can be used to check for hybridization:

  $\text{Hybridization = Number of sigma bonds + Number of lone pair}$

The molecular geometry of molecules with lone pairs on the central atom is given by VSEPR theory.