Question

What is Resonance Effect? Explain the types of Resonance Effect?

Answer 1

Negative Resonance Effect- Negative resonance effect occurs when the groups withdraw the electrons from other molecules by the process of delocalization. The groups are usually denoted by -R or -M. In this process, the molecular electron density is said to decrease. For example- -NO2, C=O, -COOH, -C≡N.

Answer 2

Explanation:

$\huge \underline \pink{Resonance\: Effect}$

➡The polarity obtain in the molecule by the interaction between conjugated π bond called resonance effect.

They are of two types:

Positive resonance effect :

➡If the substituent group has a lone pair of electron to donate attached π bond or conjugated system of π bond. The effect is called positive resonance effect.

➡For eg: - OH, - NH2.

Negative resonance effect :

➡If the substituent has tendecy to withdraw the electrons from the attached π bond or cnjugated system towards itself is called negative resonance effect.

➡For eg: - CN, - COOR.

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