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Identify the atoms or groups from the f...

Identify the atoms or groups from the following that exhibit - R effect and +R effect when present on benzene ring :
`-OR, - "NHCOR", - "CN", - "X", - "NO"_(2), - "NH"_(2)`,

A

B

C

D

Text Solution

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The correct Answer is:
D

Z groups are electron withdrawing groups and decrease electron density on benzene ring. These groups (Z) are `-CN,-NO_(2)` and

Y groups donate the electron and increases the electron density on benzene ring.
These groups (Y) are `-OR, -NHCOR, -X,-NH_(2)`.
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