NEET · Chemistry · STD 12 - 9. Amines

The correct statement regarding the basicity of arylamines is

A arylamines are generally more basic than alkylamines because of aryl group
B arylamines are generally more basic than alkylamines, because the nitrogen atom in arylamines is \(sp-\)hybridised
C arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalised by interaction with the aromatic ring \(\pi -\)electron system
D arylamines are generally more basic than alkylamines because the nitrogen lone-pair electrons are not delocalised by interaction with the aromatic ring \(\pi -\)electron system.

Verified Solution

Answer & Solution

Correct Answer

(C) arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalised by interaction with the aromatic ring \(\pi -\)electron system

Step-by-step Solution

Detailed explanation

Delocalized lone pair of nitrogen less basic

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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