JEE Main Chemistry question

The relative stabilities of the cations A = ⁺CH₃, B = ⁺CH₂CH₃, C = ⁺CH₂OCH₃ will be in the order

(A)C>B>ACorrect
(B)C<B<A
(C)B>C>A
(D)C>A>B

Answer: (A)

Solution

In C, the adjacent oxygen's lone pair can directly donate into the empty p-orbital of the cationic carbon by resonance (an oxocarbenium-type stabilization), making it far more stable

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Question ID VK-139087