Question about entropy

[omni]

Which of the materials have a higher entropy:

HF(g) - Ne(g) ?


Because both of the materials are in State of matter (g) so the van der Waals force are not Affects here.

so how i can know who have higher entropy ?

thanks.

[kk727]

The more complex the molecule, the greater its entropy. My guess would be the HF (g) because it is more complex, and hence has a greater ability to "be random," which is ideally what entropy measures.

[omni]

OK thank you, but can you Please tell me why HF is more complex molecule ?


thanks.

[kk727]

HF is a compound; there is a hydrogen bonded to a fluorine. As for neon, it is just an element by itself.

Usually, the molecular mass comes into play, but they both are about the same. (Around 20 g/mol)

[omni]

ok thank you.