• # question_answer Boiling point of ethane is more than that of methane. Assign reason.

The molecular size of ethane $(C{{H}_{3}}-C{{H}_{3}})$  molecule is more than that of methane$(C{{H}_{4}})$. Therefore, the van der Waals forces of attraction are more in ethane molecules than in molecules of methane resulting in higher boiling point.