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The correct order of increasing basic n...

The correct order of increasing basic nature of the following bases is

A

`2lt5lt1lt3lt4`

B

`5lt2lt1lt3lt4`

C

`2lt5lt1lt4lt3`

D

`5lt2lt1lt4lt3`

Text Solution

Verified by Experts

The correct Answer is:
A
`-OCH_(3)` is strongest electron releasing group (+M) effect) which opposes most the dispersion of lone pair of electron of nitrogen into the ring Thus `-OCH_(3)` being at para - position imparts highest basicity .`NO_(2)` being at meta - position stabilises the electron pair of nitrogen only by - I effect . While `NO_(2)` being present at para- positionn due to -M effect and - I effect stabilises the lone pair of electron of nitrogen , most and impart least basicity .
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