Example #1

Example #1

EXAMPLE Drawing Resonance Structures:   

A reasonable Lewis structure for H2NCOCH3 is below. Predict whether it would have resonance. If it does, draw all of the reasonable resonance structures and the resonance hybrid.



The structure has a double bond and an adjacent atom with a lone pair, so it could have resonance. The possible resonance structures are below.

The first structure has the most common bonding pattern for all of its atoms, so it is a reasonable Lewis structure. Although the less common bonding patterns for the oxygen and nitrogen atoms in the second structure suggest that it is less stable than the first structure, we still consider it to be a reasonable resonance structure.

Using the two resonance structures above as a guide, we get the following resonance hybrid.


Click here to see a molecular model of acetamide.

Click here to see Exercise #1. 

Click here to see Example #2. 

Click here to see Exercise #2. 

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