Boiling Points

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ayushibanerjee06
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Boiling Points

Postby ayushibanerjee06 » Wed Nov 20, 2019 3:29 pm

Why does NO2 have a higher boiling point than N2O? I am confused because NO2 is a radical.

TarynD_1I
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Joined: Sat Aug 24, 2019 12:17 am

Re: Boiling Points

Postby TarynD_1I » Wed Nov 20, 2019 3:56 pm

ayushibanerjee06 wrote:Why does NO2 have a higher boiling point than N2O? I am confused because NO2 is a radical.


NO2 has a higher boiling point because it is more polarizable, which means it has stronger van der waals forces. Since NO2 has more electrons than N2O, it is bigger and more polarizable. I don't think it has anything to do with the radical?

Jielena_Bragasin2G
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Re: Boiling Points

Postby Jielena_Bragasin2G » Sat Nov 23, 2019 11:04 pm

Since NO2 has more electrons, there is a stronger LDF than in N2O which has a less electrons. I am not sure if this has to due with polarizability though. Hope this helps!

Liliana Aguas 3G
Posts: 59
Joined: Wed Sep 18, 2019 12:20 am

Re: Boiling Points

Postby Liliana Aguas 3G » Sat Nov 23, 2019 11:08 pm

Yes exactly, because there's more electrons, there's more protons in the nucleus also so the mass is larger and that makes it a larger molecule. Because it's a larger molecule, the polarizability of it is greater, so there's a higher chance for fluctuability of its electrons around the orbitals so the chances of LDF are higher and more LDF means higher boiling point.


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