The correct order of reactivity towards the electrophilic substitution of the compounds aniline (I), benzene (II) and nitrobenzene (III) is:
A
I>II>III
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B
III>II>I
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C
II>III>I
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D
III>I>II
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Solution
The correct option is BI>II>III Nitro group is an electron withdrawing group. It removes electron density from aromatic nucleus.
Thus, the reactivity of nitrobenzene towards electrophilic aromatic substitution reaction is less.
Amino group is an electron releasing group. They increase the electron density on benzene ring.
Thus, aniline is more reactive towards electrophilic aromatic substituion reaction than benzene.
Hence, the correct order of reactivity towards the electrophilic substitution of the compounds, aniline (I), benzene (II), nitrobenzene (III) is I>II>III.