Question

draw valid resonance structures for the compound shown below

Explanation:

Resonance structures are generated by delocalizing the positive charge across the conjugated pi system. Each structure moves the pi bond to shift the positive charge to an adjacent sp²-hybridized carbon, maintaining the overall molecular framework and charge.

Answer:

The valid resonance structures (from left to right, including the given structure) are:

1. $\text{CH}_3-\text{C}^+=\text{CH}-\text{CH}=\text{CH}_2$
2. $\text{CH}_3-\text{CH}=\text{CH}-\text{C}^+=\text{CH}_2$
3. $\text{CH}_3-\text{CH}=\text{CH}-\text{CH}=\text{CH}^+$