In electrophilic substitution reactions of haloarenes, the halogen atom is deactivating but ortho-,

Q: What is the correct answer for CBSE12?

The correct answer is B. Halogens are electron-withdrawing by inductive effect (-I effect), which destabilizes the intermediate carbocation and deactivates the ring towards electrophilic substitution. However, halogens have lone pairs of electrons that can be donated to the benzene ring through resonance (+R effect), increasing electron density at the ortho and para positions. This resonance effect is stronger than the in

Q: In electrophilic substitution reactions of haloarenes, the halogen atom is deactivating but ortho-, para-directing. This is because:

The correct answer is B. Halogens are electron-withdrawing by inductive effect (-I effect), which destabilizes the intermediate carbocation and deactivates the ring towards electrophilic substitution. However, halogens have lone pairs of electrons that can be donated to the benzene ring through resonance (+R effect), increasing electron density at the ortho and para positions. This resonance effect is stronger than the in

Q: What are the options for this CBSE12 question?

A. Both inductive and resonance effects are deactivating. · B. The inductive effect is deactivating, but the resonance effect is ortho-, para-directing. · C. Both inductive and resonance effects are ortho-, para-directing. · D. The resonance effect is deactivating, but the inductive effect is ortho-, para-directing.

Question

In electrophilic substitution reactions of haloarenes, the halogen atom is deactivating but ortho-, para-directing. This is because:

FirstInTest · Accepted Answer

Halogens are electron-withdrawing by inductive effect (-I effect), which destabilizes the intermediate carbocation and deactivates the ring towards electrophilic substitution. However, halogens have lone pairs of electrons that can be donated to the benzene ring through resonance (+R effect), increasing electron density at the ortho and para positions. This resonance effect is stronger than the inductive effect in directing the incoming electrophile to ortho and para positions, even though the overall effect is deactivation.

Answer

Both inductive and resonance effects are deactivating.

Answer

The inductive effect is deactivating, but the resonance effect is ortho-, para-directing.

Answer

Both inductive and resonance effects are ortho-, para-directing.

Answer

The resonance effect is deactivating, but the inductive effect is ortho-, para-directing.

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