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Question

Chemistry Question on Hydrocarbons

Which of the following molecule/species is most stable?

A

Fig 3

B

Fig 2

C

Fig 1

D

Fig 4

Answer

Fig 1

Explanation

Solution

Step 1. Identify Aromatic Stability: The most stable species among the options will be the one that is aromatic as aromatic compounds exhibit additional stability due to delocalized π-electrons.

Step 2. Analyze Each Structure: Option (1): This structure satisfies Huckel’s rule (4n + 2) for aromaticity and has a planar conjugated ring structure, making it aromatic and stable. Other Options: Do not satisfy Huckel’s rule or are non-aromatic.

Step 3. Conclusion: Option (3) is the most stable due to its aromaticity.