નીચેના આલ્કેન્સ સમ વિભાજન દ્વારા મુક્ત મુલક બનાવે છે. \(CH_3 - CH_3, CH_3 - CH_2 \)\(- CH_3, (CH_3)_2CH - CH_3,\) \( CH_3 - CH_2 - CH(CH_3)_2.\) આ મૂલકોનો સ્થાયિતાનો વધતો ક્રમ કયો છે?

A \((CH_3)_2 \mathop C\limits^ \bullet - CH_2CH_3 < CH_3 - \mathop C\limits^ \bullet H - CH_3 <\)\( CH_3 - \mathop C\limits^ \bullet H_2 < (CH_3)_3 \mathop C\limits^ \bullet \)
B \(CH_3 - \mathop C\limits^ \bullet H_2 < CH_3 - \mathop C\limits^ \bullet HH - CH_3 <\)\( (CH_3)_2 \mathop C\limits^ \bullet - CH_2 - CH_3 < (CH_3)_3 \mathop C\limits^ \bullet \)
C \(CH_3 - \mathop C\limits^ \bullet H_2 < CH_3 - \mathop C\limits^ \bullet H - CH_3 <\)\( (CH_3)_3 \mathop C\limits^ \bullet < (CH_3)_2 \mathop C\limits^ \bullet - CH_2CH_3\)
D \((CH_3)_3 \mathop C\limits^ \bullet < (CH_3)_2 \mathop C\limits^ \bullet - CH_2CH_3 <\)\( CH_3 - \mathop C\limits^ \bullet H - CH_3 < CH_3 - \mathop C\limits^ \bullet H_2\)

Verified Solution

Answer & Solution

Correct Answer

(B) \(CH_3 - \mathop C\limits^ \bullet H_2 < CH_3 - \mathop C\limits^ \bullet HH - CH_3 <\)\( (CH_3)_2 \mathop C\limits^ \bullet - CH_2 - CH_3 < (CH_3)_3 \mathop C\limits^ \bullet \)

Step-by-step Solution

Detailed explanation

More the number of hyperconjugative structures, the greater is the stability.

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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