The N which contribute least to the basicity of the compound is :

The N which contribute least to the basicity of the compound is :
  1. N-9
  2. N-3
  3. N-1
  4. N-7

Solution

N-9 lone pair is delocalized and participated in resonance, so it is not basic in nature.

Asked in: JEE Main 2016 (10 Apr Online)

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