Which of the following haloalkanes is expected to have the highest boiling point

Which of the following haloalkanes is expected to have the highest boiling point?

Which of the following haloalkanes is expected to have the highest boiling point?

Correct Answer: Iodoethane

Step 1: Understand that haloalkanes are compounds that contain carbon, hydrogen, and halogen atoms (like iodine, bromine, chlorine).
Step 2: Know that boiling point is affected by the size and weight of the molecules. Larger molecules usually have higher boiling points.
Step 3: Identify the haloalkanes in the question. For example, iodoethane (C2H5I) contains iodine, which is larger than other halogens like bromine or chlorine.
Step 4: Recognize that iodine is more polarizable than smaller halogens. This means it can create stronger temporary dipoles, leading to stronger intermolecular forces.
Step 5: Compare the size and polarizability of the halogens in the haloalkanes. Iodine is the largest and most polarizable.
Step 6: Conclude that iodoethane, which contains iodine, will have the highest boiling point among the options given.

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