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Which one(s) is/are true?

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An Intiative by Sri Chaitanya

All the nitrogen present in (I), (II), and (III) is sp²hybridised.

In (III) N^a is more basic than N^b.

(I and (III) are modest Bronsted bases whereas (II) is not.

When (II) is protonated in the presence of a strong acid, protonation occurs at C-2.

answer is A, C, D.

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Detailed Solution

So, N^b is more basic due to the presence of LP e^-'s.
Hence, the statement (2) is wrong.

Statement (3) is true.
Statement (4): Due to resonance all the N in I, II, and III is sp²
hybridised and hence the statement is true.

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