[υикиσωи]

المشاركة الأصلية كتبت بواسطة NUNOVA 3ALA AY ASAS A5OD EL BOILING POINT 15. The hydrocarbon having the lowest boiling point among the following is _____. A) n-pentane B) neopentane C) isopentane D) 2-methylbutane

The general rules about the boiling points of alkanes is that the lower the molecular weight and the more branching a hydrocarbon has, the lower it's boiling point will be.

because when the molecule is linear it technically can fit together closely forming more intermolecular forces and required more energy to break them.

Neopentane is a fully saturated hydrocarbon (pentane) with 4 branches (methyl groups). therefore,it will have the lowest boiling point.

So,the answer will be B