why nitro group show its effect only at ortho and para positions and ont at meta position

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Solution

Actually, nitro group is electron withdrawing group which snatches electrons from ortho and para positions thereby creating the electron deficiency and so the electron density is little bit higher at meta position. So, the nitro group becomes meta directing and the new group attack at meta position and the effect of nitro group is at para and ortho positions only.

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Similar questions

The nitro group in nitrobenzene is a/an

Q. Give reasons:
''The presence of nitro group

(- N O_{2})

at ortho/para positions increase the reactivity of haloarenes towards nucleophilic substitution reaction''.

Q. Ethyl group

(- C H_{2} C H_{3})

in ethylbenzene increases electron density at which of the following positions?

Assertion (A): - $N O_{2}$ group is benzene ring deactivating and m - directing group

Reason (R): - $N O_{2}$ group with draws electron density from benzene ring and makes ortho and para positions more electron deficient than meta position

Q. Why only ortho and para isomers can be easily separated by electrophilic substitution and not the meta isomers ?

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