Now let's define what a boiling point is. The boiling point is the point at which our pentane goes from liquid or our meal pentane. It goes from liquid to gas. And that means whenever we go from liquid to gas, we're breaking intermolecular bonds. So that means if this has a higher boiling point, that means this guy forms stronger intermolecular bonds. And that's exactly why longer the longer our carbon chain is, the stronger our intermolecular bonds are, because we have more surface area, we have more vandalbile forces than in this symmetrical case.