MCQ
Which of the following has highest boiling point?
- ✓$\ce{C_2H_5-I}$
- B$\ce{C_2H_5-F}$
- C$\ce{C_2H_5-CI}$
- D$\ce{C_2H_5-Br}$
✓
Answer
Correct option: A.
$\ce{C_2H_5-I}$
For the same alkyl group the boiling points of haloalkanes are in the order of $\ce{RF < RCI < RBr < RI}$ as with the increase in size of halogen atom the magnitude of van der Waals forces of attraction increases, resulting in higher boiling points.
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