Gas Phase Question

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Bita Ghanei 1F
Posts: 60
Joined: Thu Feb 28, 2019 12:15 am

Gas Phase Question

Postby Bita Ghanei 1F » Tue Nov 19, 2019 11:23 am

Even noble gasses, at very low temperatures, will condense to become liquids or freeze to become solid. At -200 degrees C, which is more likely to be a gas, Neon or Argon? Explain.

Could someone please provide the explanation for why Neon would be more likely to be a gas? Thank you!

jisulee1C
Posts: 94
Joined: Thu Jul 25, 2019 12:17 am

Re: Gas Phase Question

Postby jisulee1C » Tue Nov 19, 2019 11:32 am

Neon has less London dispersion forces than Argon. Because there are less dispersion forces holding the Neon molecules together it is easier to break and the bonds are therefore weaker. Because the bonds are weaker it is more likely to be a gas (gas molecules are able to move around more freely than liquid or solid states).

Sanjana Munagala_1j
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Re: Gas Phase Question

Postby Sanjana Munagala_1j » Fri Nov 22, 2019 6:31 pm

The reason Neon has weaker London Dispersion forces is because it has a lower amount of electrons compared to Argon that can fluctuate and cause instantaneous dipole interactions. You can also consider how Neon has a lower polarizabilty and thus has a lower potential energy making the LDFs weaker.

Hope that helps!

Edmund Zhi 2B
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Joined: Sat Jul 20, 2019 12:16 am

Re: Gas Phase Question

Postby Edmund Zhi 2B » Sat Nov 23, 2019 4:47 pm

Argon's more electrons can potentially form stronger London dispersion forces than the fewer electrons in Neon

Adelpha Chan 1B
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Re: Gas Phase Question

Postby Adelpha Chan 1B » Tue Dec 03, 2019 12:04 pm

Bita Ghanei 1F wrote:Even noble gasses, at very low temperatures, will condense to become liquids or freeze to become solid. At -200 degrees C, which is more likely to be a gas, Neon or Argon? Explain.

Could someone please provide the explanation for why Neon would be more likely to be a gas? Thank you!


As neon exhibits a lower molar mass, it also exhibits less london dispersion forces. With weaker london disperson forces, the bonds between its molecules in a liquid or solid form are more easily broken, allowing Neon to more likely be a gas than Argon

Mai V 4L
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Joined: Fri Sep 28, 2018 12:23 am

Re: Gas Phase Question

Postby Mai V 4L » Sun Dec 08, 2019 9:21 am

Does anyone have a video they think is a goood reference for this topic?


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