MHT CET 2022 Chemistry question

Which of the following is a Lewis acid but not Bronsted acid?

(A)
(B)
(C)
(D)Correct

Answer: (D)

Solution

A Bronsted acid is a proton donor; a Lewis acid is an electron-pair acceptor. () and () are Bronsted acids, so they are eliminated. has a lone pair on N, so it is a typical Lewis and Bronsted

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Question ID VK-096958