XeF2

(Polar molecules, Non-polar molecules, etc.)

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JamieVu_2C
Posts: 108
Joined: Thu Jul 25, 2019 12:16 am

XeF2

Postby JamieVu_2C » Sun Nov 17, 2019 4:14 pm

How is XeF2 polar when it has 3 lone pairs? How do the dipole moments cancel when there are two lone pairs above Xe and one lone pair below Xe?

chemboi
Posts: 101
Joined: Sat Jul 20, 2019 12:16 am

Re: XeF2

Postby chemboi » Sun Nov 17, 2019 4:22 pm

XeF2 is nonpolar. The three lone pairs are in the equatorial plane, while the two F form the :poles" at 180 degrees from each other.

Anne Tsai 1F
Posts: 50
Joined: Thu Jul 25, 2019 12:15 am

Re: XeF2

Postby Anne Tsai 1F » Sun Nov 17, 2019 4:24 pm

I think XeF2 is nonpolar because the fluorines are arranged so that the molecule has a linear shape, and thus there is no dipole moments.

DHavo_1E
Posts: 118
Joined: Sat Aug 17, 2019 12:17 am

Re: XeF2

Postby DHavo_1E » Sun Nov 17, 2019 6:43 pm

Anne Tsai 1F wrote:I think XeF2 is nonpolar because the fluorines are arranged so that the molecule has a linear shape, and thus there is no dipole moments.



Hi,

Could you explain how XeF2 has a linear shape when there are three lone pairs or why there are no dipole moments?
Thank you!

Claire Stoecklein 1E
Posts: 49
Joined: Sat Jul 20, 2019 12:15 am

Re: XeF2

Postby Claire Stoecklein 1E » Sun Nov 17, 2019 7:09 pm

The molecular shape just refers to the arrangement of the bonds. The two fluorine atoms occupy one plane around the Xe atom, with the lone pairs occupying much of the surrounding three dimensional space. Therefore, the bond angles are 180 and linear.

Bradley Whitworth 4B
Posts: 54
Joined: Sat Jul 20, 2019 12:17 am

Re: XeF2

Postby Bradley Whitworth 4B » Sun Nov 17, 2019 7:25 pm

XeF2 is nonpolar because the fluorine atoms are opposite of each other and their dipoles cancel out.


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