Boiling Point Temps N2, O2, NO

[Erika Patel 3I]

What would be the order of increasing boiling point temperatures for N₂, O₂ and NO? I understand that NO would have the highest boiling point because it experiences dipole-dipole forces. To determine the difference between N2 and O2 we would look at size since the larger molecule would be more polarizable. However, I am not sure which is larger, since oxygen atoms have a smaller atomic radius than nitrogen atoms but oxygen has a larger molar mass. Thanks!

[oliviageronimo]

Oxygen has a higher boiling point because it is more electronegative. The LDF forces between O2 molecules are stronger than those between N2 because of this.

[Damian Valle Garcia 3I]

Hello, the order of increasing boiling points is N2<O2<NO, with NO having the highest boiling point because of its dipole-dipole forces, and O2 having a higher boiling point than N2 due to stronger London dispersion forces because of its larger molar mass.