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NEET2008ChemistryHaloalkanes and HaloarenesActual

Which one of the following is most reactive towards electrophilic attack?

Correct answer

2

Step-by-step solution

Key Idea: Electron releasing groups stabilise the intermediate cation whereas electron withdrawing groups destabilise it. The order of electron withdrawing group is : NO ₂> Cl > OH > C ₆ H ₅ electrophilic substitution because - OH group least destabilise the carbocation. Further - OH group is strongly activating group while - NO ₂ and - Cl are deactivating group.

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