Why is liquid nitrogen so cold?

1 Answer
Nov 14, 2015

Nitrogen is a pure, elemental substance. Any such substance has constant physical properties such as melting point, and boiling point.

Explanation:

Nitrogen is characterized by a boiling point of -196^"o"196o CC. At this temperature its vapour pressure is 11 atmatm. Why is the boiling point of nitrogen so low? Well, only weak dispersion forces operate between the nitrogen molecules.