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  • Help me answer: - Some Basic Principles of Organic Chemistry - JEE Main

The electrophile, E^{\bigoplus } attacks the benzene ring to generate the intermediate \sigma - complex. Of the following, which \sigma - complex is of lowest energy ?

 

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

 

Answers (2)

best_answer

As we learnt ,

 

Stability due to resonance -

More the no of resonating structure more is the stability.

- wherein

 

 In , there is no NO2 , which is an electron withdrawing group and decreases the stability of cation. Hence , it is of lowest energy.

 


Option 1)

Option 2)

Option 3)

Option 4)

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