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Organic Chemistry 1

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Moderate

Electrophilic Aromatic Substitution: Electron Effects

ORGO1-Y842YH

Which of the following substituents withdraw electrons by resonance?

Select ALL that apply.

A

$-COCH_{3}$

B

$–NH_{3}^{+}$

C

$–OCH_{3}$

D

$-NO_{2}$