organic Chemistry 222.01 ExAM 3 NAME ARTI in the following questions, choose the

Question

organic Chemistry 222.01 ExAM 3 NAME ARTI in the following questions, choose the letter of the one correct answer. (5pts each) 1. Which statement is false about electron withdrawing and releasing groups? A. All electron-donating groups are activating groups and all are ortho-para directors. B. With the exception of halogen substituents, all electron-withdrawing groups are deactivating groups and all are ortho- directors. C. Halogen substituents are weakly deactivating groups and are ortho-para directors. D. All of the above 2. Groups that have an unshared electron pair on the atom attached to the aromatic ring that make the ring more reactive than benzene are groups and are directors. A. deactivating, ortho-para B. activating, meta C deactivating, meta D. activating, ortho-para 3. The nitro (NO2) group is a very strong group and it is a powerful director A. deactivating, ortho-para B. activating, meta C. deactivating, meta D, activating, ortho-para 4. The resonance effect of substituent arises from the electrostatic interaction of the polarized bond to the substituent with the developing positive charge in the ring as it is attacked by an electrophile. A. True B. False 5. All electron-donating groups are activating groups and all are ortho-para directors with the substituents, all electron-withdrawing groups are deactivating groups and exception of all are meta directors.

Explanation / Answer

1) D. All the above

2.) D. Activating, ortho-para

3) C deactivating, meta

4) Flase. ( the given explanation is correct for inductive effect )

5) Halogen

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