How are the bonds and electrons changed in the negative resonance structure of nitrobenzene?
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Solution
Resonance Structure of Nitrobenzene
The presence of an electron-withdrawing group, which has a double bond adjacent to the phenyl ring of nitrobenzene, causes the aromatic ring to have a lower electron density than that of benzene.
The ortho and para positions are positive in resonance structures.
Resonance structure of nitrobenzene.
Therefore, due to the presence of the electron-withdrawing group of nitro it possesses negative resonance.