Which compound would have the lowest boiling point?

Question

Quizplus · Accepted Answer

The boiling point of a compound is determined by its intermolecular forces, particularly van der Waals forces. A) I is a nonpolar covalent molecule and has the weakest van der Waals forces amongst the given compounds. Hence, it would have the lowest boiling point. On the other hand, III and IV are polar molecules and can form hydrogen bonds, which makes them stronger than nonpolar compounds. V is an ionic compound and has the strongest intermolecular forces, making it have the highest boiling point. B is a metallic element and does not have a boiling point, it sublimes directly from the solid state to the gas state.

Which Compound Would Have the Lowest Boiling Point