Resonance Energy

Question

Resonance stabilization is highest in:

RankGuru · Accepted Answer

1. **Resonance Stabilization**: The lowering of energy of a molecule due to delocalization of $\pi$ electrons.
2. **Aromaticity**: Molecules that are cyclic, planar, and have $(4n+2)$ $\pi$ electrons (Hückel's Rule) exhibit extraordinary stability.
3. **Comparison**:
   - **Benzene**: Aromatic. All $6$ $\pi$ electrons are perfectly delocalized over the ring. High resonance energy ($\approx 150$ kJ/mol).
   - **Butadiene**: Conjugated, but open-chain. Lower stabilization.
   - **Ethene**: Isolated double bond. Zero resonance stabilization.
   - **Cyclohexane**: Saturated alkane. No $\pi$ system at all.

Resonance Energy

Select the correct option:

🔒 Solution Hidden from View

More basic organic principles Practice Questions

In p-nitrophenol, nitro group reduces phenolic acidity via resonance or inductive effect?

Correct order of carbocation stability:

Which order correctly represents decreasing +I (electron donating) inductive effect?

A compound is aromatic if it is cyclic, planar, fully conjugated and contains:

Keto-enol tautomerism involves migration of:

Correct decreasing basicity order in aqueous solution:

Hyperconjugation is best described as:

An electrophile is best defined as species that:

Steric hindrance most reduces rate of which mechanism?

Order of decreasing −I effect: NO2 > F > CH3 > H is:

Which is the correct acidity order (strongest acid first)?

Carboxylic acids are stronger acids than alcohols because:

About This Question

Solution