Compare the relative stability of given carbocations.
$\text{CH}_{3}\text{-}\text{C}^{+}\text{-(CH}_{3})_{2}$ (I) $\text{CH}_{3}\text{-}\text{C}^{+}\text{H-CH}_{3}$ (II) $\text{CH}_{3}\text{-}\text{C}^{+}\text{H}_{2}$ (III)

Question

Which of the following shows resonance but not hyperconjugation?

Answer 1

Step 1: Classify
The ions are tertiary, secondary and primary respectively.

Step 2: Rule
Stability order: $3^{\circ}>2^{\circ}>1^{\circ}$.

Step 3: Compare the options
Only option D gives I > II > III.

Final Answer:
The tertiary ion is the most stable. \[ \boxed{\text{(D) }\text{I}>\text{II}>\text{III}} \]

Compare the relative stability of given carbocations.
\(\text{CH}_{3}\text{-}\text{C}^{+}\text{-(CH}_{3})_{2}\) (I) \(\text{CH}_{3}\text{-}\text{C}^{+}\text{H-CH}_{3}\) (II) \(\text{CH}_{3}\text{-}\text{C}^{+}\text{H}_{2}\) (III)

Show Hint

The Correct Option is D

Solution and Explanation

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Questions Asked in MHT CET exam

Compare the relative stability of given carbocations.\(\text{CH}_{3}\text{-}\text{C}^{+}\text{-(CH}_{3})_{2}\) (I) \(\text{CH}_{3}\text{-}\text{C}^{+}\text{H-CH}_{3}\) (II) \(\text{CH}_{3}\text{-}\text{C}^{+}\text{H}_{2}\) (III)