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Statement-I: Me3C+ is more stable than Me2CH+, and Me2CH+ is more stable than MeCH2+. Statement-II: The greater the number of hyperconjugative (no-bond resonance) structures, the more stable the carbocation. Choose the correct option.

1. Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.
2. Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.
3. Statement-1 is true, statement-2 is false.
4. Statement-1 is false, statement-2 is true.

Correct answer: Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.

Solution

Carbocation stability order is 3 deg > 2 deg > 1 deg, which is exactly Me3C+ > Me2CH+ > MeCH2+, so Statement-I is true. The number of hyperconjugative structures equals the number of alpha C-H bonds: 9, 6, 3 respectively. More hyperconjugative structures means greater delocalization of positive charge and greater stability, so Statement-II is true AND it correctly explains Statement-I.

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