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Postby JChen_2I » Sat Nov 16, 2019 10:56 pm

For 3F15, why does AsF3 have a higher boiling point than AsF5?
I guess my question is also: how is AsF5 polar while AsF3 not, as the answer key says?

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Re: 3F15

Postby HanaAwad_4B » Sat Nov 16, 2019 10:59 pm

AsF3 is not polar because even though there are dipole moments, the geometry cancels out. Polar molecules have higher boiling points than nonpolar molecules.

Norman Dis4C
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Re: 3F15

Postby Norman Dis4C » Sun Nov 17, 2019 11:13 am

For both molecules, the electronegative force cancels out, but since AsF5 has more electrons, it has a higher boiling point.

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