Chapter 14, Problem 75AE

Interpretation Introduction

Interpretation: The Lewis structure of caffeine with all atoms with formal charge zero, number of C and N atoms with ${\text{sp}}^{\text{2}}$ , ${\text{sp}}^3$ and sp hybridization and also number of s and π bonds needs to be determined.

  

Concept Introduction:

Lewis dot structure is the representation which shows the bonding between atoms present in a molecule. It shows lone pairs and bond pairs that existing on each bonded atom. Lewis dot structure is also known as Lewis dot formula or electron dot structure.

The sum of valence electrons must be arranged in such a way that all atoms must get octet configuration (8 electrons).

  $\text{Hybridization = Number of sigma bonds + Number of lone pairs on bonded atoms}\text{.}$