Here's why:
* Polarity: Nitrogen monoxide (NO) is a polar molecule. This is because the electronegativity difference between nitrogen and oxygen atoms creates a partial positive charge on the nitrogen atom and a partial negative charge on the oxygen atom.
* Dipole-Dipole Interactions: These interactions occur between polar molecules where the partially positive end of one molecule is attracted to the partially negative end of another molecule. This creates a stronger attraction compared to London dispersion forces, which are the only forces present in nonpolar molecules.
While NO also exhibits London dispersion forces, these are weaker than dipole-dipole interactions.