The Lewis structure for the caffeine needs to be drawn in which the formal charge of all the atoms is zero. Concept Introduction: The Lewis structure or molecular skeleton is also known as electron dot structure. It is the complete representation of a molecule which shows all bonded atoms with their chemical bonds and lone pairs if any present on them. In Lewis structures, all atoms are represented by their atomic symbols and chemical bonds by lines. The lone pairs or extra electrons on atoms must be represented as cross or dots. To draw the Lewis structure or molecular skeleton, count total number of valence electrons and arrange them in such a way that all bonded atoms get octet configuration.

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Chapter 13, Problem 134CP

Interpretation Introduction

Interpretation: The Lewis structure for the caffeine needs to be drawn in which the formal charge of all the atoms is zero.

Concept Introduction: The Lewis structure or molecular skeleton is also known as electron dot structure. It is the complete representation of a molecule which shows all bonded atoms with their chemical bonds and lone pairs if any present on them.

In Lewis structures, all atoms are represented by their atomic symbols and chemical bonds by lines. The lone pairs or extra electrons on atoms must be represented as cross or dots.

To draw the Lewis structure or molecular skeleton, count total number of valence electrons and arrange them in such a way that all bonded atoms get octet configuration.

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