DPP – 11GOC4 RESONANCE OR MESOMERIC EFFECT

1. What is the difference between +R and – R effects?

 

2. Draw the resonance structure of the following  and also mention the type of R effect:

1.  CH2 = CH-Cl

2. CH3-CH  = CH-CHO

3. CH3CH  = CHCH2 +

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