TS EAMCET · Chemistry · General Organic Chemistry

The correct order of the stability of the following compounds based on hyperconjugation is

A $IV > III > II > I$
B $IV > II > I > III$
C $IV > II > III > I$
D $IV > I > III > II$

Verified Solution

Answer & Solution

Correct Answer

(A) $IV > III > II > I$

Step-by-step Solution

Detailed explanation

Hyperconjugation increases the stability of alkene which does not have any other resonance effect. And hyperconjugation effect depends on the number of alpha hydrogen around the alkene. More the number of alpha hydrogen atoms more stable the alkene will be. So, stability order…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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