Question

The order of reactivity of phenyl magnesium bromide (\( \text{PhMgBr} \)) with the following compounds is:

• A. III>II>I
• B. II>III>I
• C. I>III>II
• D. II>I>III

Hint:

Nucleophilic substitution reactivity depends on the electrophilic nature of the compound being attacked.

Answer 1

The Correct Option is D

Phenyl magnesium bromide is a strong nucleophile and will react most readily with compounds that have a weak or reactive electrophilic center. The order of reactivity is determined by the electrophilicity of the compounds.

Step 2: Conclusion.
The correct order of reactivity is II>I>III, corresponding to option (d).