In a molecule of isobutylene (2-methylpropene), what is the total number of distinct no-bond resonan — GOC and Organic Chemistry Basics Chemistry Question
Question
In a molecule of isobutylene (2-methylpropene), what is the total number of distinct no-bond resonance (hyperconjugative) structures that can be drawn?
Answer: 6
💡 Solution & Explanation
Isobutylene has the structure $(CH_3)_2C=CH_2$. It contains two methyl groups attached to the $sp^2$ carbon, giving $3 + 3 = 6$ $\alpha$ -hydrogens. Since each $\alpha$ -hydrogen can form one no-bond resonance structure, the total is exactly 6.
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