The carbanion thus formed is stabilised through resonance The negative
charge appeared at ortho- and para- positions with respect to the halogen substituent is
stabilised by –NO2 group while in case of meta-nitrobenzene, none of the resonating
structures bear the negative charge on carbon atom bearing the –NO2 group Therefore,
the presence of nitro group at meta- position does not stabilise the negative charge and
no effect on reactivity is observed by the presence of –NO2 group at meta-position Rationalised 2023-24
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Chemistry
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