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Grade 12Organic Chemistry

In aromatic hydrocarbons, is -NO an activating group or deactivating group?? Is it o/p or meta directing??? plz explain

Profile image of Harish R
15 Years agoGrade 12
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1 Answer

Profile image of Ritvik Gautam
ApprovedApproved Tutor Answer15 Years ago

It is an meta directing group.

If you draw it's resonating structures, you will observe that there are +ve charges on the ortho and para positions. Since, it is difficult for an electrophile to attack an already electron deficient carbacation, hence it is feasable for it to only attack at the meta position. Hence, it is a meta directing group.

 

 

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