How can you tell which has a higher melting point, Ne or Ar?

Answer 1

It has to do with the strength of the interatomic forces that would exist between neon or argon atoms in a sample of the element. Both neon and argon atoms experience attractive London forces. Generally speaking, the bigger and heavier an atom is, the stronger the London forces (and the higher the melting point). Because Ar is a bigger atom, it has the stronger interatomic forces and higher melting point.

Answer 2

Check WebElements.

Answer 3

neon