Thus you can infer that aniline (five resonating
structures) is more stable than anilinium ion Hence, the proton
acceptability or the basic nature of aniline or other aromatic amines
would be less than that of ammonia In case of substituted aniline, it
is observed that electron releasing groups like –OCH3, –CH3 increase
basic strength whereas electron withdrawing groups like  –NO2, –SO3H,
–COOH, –X decrease it Rationalised 2023-24
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Chemistry
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