Question

Which of the following has the highest boiling point?

• A. lodobenzene
• B. Bromobenzene
• C. Chlorobenzene
• D. Fluorobenzene

Answer 1

Answer: (A)

For the same aryl group, b.p. increases as the size of the halogen increases. Thus, $C_6{H}_{5}I$ has the highest b.p.