JEE Main 2003 Chemistry question

Which one of the following substances has the highest proton affinity?

(1)
(2)Correct
(3)
(4)

Answer: (2)

Solution

Proton affinity measures the tendency to accept a proton, i.e. basicity of the lone pair. has a lone pair on the small, less electronegative N (compared

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Question ID VK-038147