The boiling points for methane, ethane, propane and butane are listed below. $ \begin{aligned} \text{CH}_4 &: 112\,\text{K}\\ \text{CH}_3\text{CH}_3 &: 185\,\text{K}\\ \text{CH}_3\text{CH}_2\text{CH}_3 &: 231\,\text{K}\\ \text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_3 &: 273\,\text{K} \end{aligned} $ Which statement accounts for the rise in boiling point from methane to butane?
- ACloser packing of molecules results in stronger van der Waals’ forces.
- BMore covalent bonds are present and therefore more energy is required to break the bonds.
- CMore electrons in the molecules results in stronger van der Waals’ forces.
- DMore hydrogen atoms in the molecules results in stronger hydrogen bonding.