Argon has a higher melting point (84 K) than neon (24 K) because there is:

Question

Quizplus · Accepted Answer

Argon has a higher melting point than neon primarily due to stronger dispersion forces. Dispersion forces, also known as London dispersion forces, are a type of van der Waals force that increases with the size or molar mass of the atom or molecule. Since argon atoms are larger and have more electrons than neon atoms, the dispersion forces are stronger in argon, leading to a higher melting point. There are no dipole-dipole interactions, hydrogen bonding, or ionic bonding in these noble gases because they are monatomic and nonpolar.

Argon Has a Higher Melting Point (84 K) Than Neon