Question

What is Mesomeric Effect,+H effect,-H effect​

Answer 1

Answer:

+M effect, -M Effect

Explanation:

+M effect (Positive mesomeric effect)

When the electrons or the pi electrons are transferred from a particular group towards a conjugate system, thus increasing the electron density of the conjugated system then such a phenomenon is known as (+M) effect or positive mesomeric effect.

-M Effect (Negative mesomeric effect)

When the pi-bond electrons are transferred from the conjugate system to a particular group thus the electron density of the conjugate system is decreased, then this phenomenon is known as negative mesomeric (–M) effect.