Resonance
Easychemistry
Which of the following shows resonance?
Select the correct option:
Solution
Incorrect! Answer:
CH₂=CH-CHO
Resonance occurs in molecules with a conjugated system (alternating single and double bonds, or lone pair adjacent to a double bond).
- CH₂=CH-CHO (Acrolein): Has the structure CH2=CH−C(=O)H. The π electrons of the C=C double bond and the C=O double bond are separated by exactly one single bond, creating a conjugated system where electrons can delocalize.
- Propane and Ethanol have only single bonds. Propene (CH2=CH−CH3) has an isolated double bond but lacks conjugation.
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About This Question
- Subject
- chemistry
- Chapter
- some basic principles of organic chemistry
- Topic
- resonance
- Difficulty
- Easy
- Year
- 2025
This easy difficulty chemistry question is from the chapter some basic principles of organic chemistry, covering the topic of resonance. It appeared in the 2025 exam. Practice this and similar questions to strengthen your understanding of some basic principles of organic chemistry concepts.
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