Electron Withdrawal (-M): The Nitrobenzene Effect

The video explains the minus M effect, where atoms or groups withdraw electrons, focusing on the Nitro group in nitrobenzene. The Nitro group, with a positive charge, is bonded to oxygen, affecting the benzene ring's electron density. This interaction leads to resonance, forming specific structures and reducing electron density at ortho and para positions, making nitrobenzene less reactive to electrophilic attacks compared to benzene.

What is the minus M effect primarily associated with?

• Proton withdrawal

• Proton donation

• Electron withdrawal

• Electron donation

In nitrobenzene, what charge does the nitrogen in the nitro group carry?

• Negative charge

• Neutral charge

• Positive charge

• No charge

How does the nitro group affect the electron density of the benzene ring?

• Increases electron density

• Decreases electron density

• Has no effect

• Doubles the electron density

What is the impact of the minus M effect on the reactivity of nitrobenzene compared to benzene?

• Equally reactive

• Unreactive

• More reactive

• Less reactive

Which positions on the benzene ring are most affected by the minus M effect of the nitro group?

• Only the para position

• All positions equally

• Ortho and para positions

• Meta positions