1.

Which of the following has maximum extent of resonance?

Answer»

`R-overset(O)overset(||)(C)-Cl`
`R-overset(O)overset(||)(C)-O-overset(O)overset(||)(C)-R`
`R-overset(O)overset(||)(C)-OR`
`R-overset(O)overset(||)(C)-NH_(2)`

ANSWER :D


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