Which Has Higher Entropy: HF(g) or Ne(g)?

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HF(g) is considered to have higher entropy than Ne(g) due to its molecular complexity, as HF is a compound consisting of hydrogen and fluorine, while neon is a monatomic element. The complexity of HF allows for greater molecular randomness, which is a key factor in measuring entropy. Although both substances have similar molecular masses (around 20 g/mol), the presence of bonds in HF contributes to its higher entropy. The discussion clarifies that van der Waals forces do not significantly influence entropy in gases. Understanding molecular structure is essential in determining entropy differences between gases.
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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.
 
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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.
 
OK thank you, but can you Please tell me why HF is more complex molecule ?thanks.
 
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)
 
ok thank you.
 

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