'what make the Difference of the Boiling Point between CH3CH2CH2CH3 Butane.
To his Isomer( Isobutane) (CH3)3CH?

I know the Boiling Point of Isobutane (-11.7) is low then Butane.

Thanks.

This very question was asked and answered excellently by Unknown008 less than two weeks ago. I looked to get this informaton and see that YOU asked the question. My, what a short attention span! The answer is still the same: Butane has a larger surface area.

Yea but I wasen't sure about this.