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Problem 3F10 b

Posted: Thu Nov 21, 2019 10:28 am
by Diana_Diep2I
Which structure has stronger IMFs? SiF4 or Si2F2?

Re: Problem 3F10 b

Posted: Thu Nov 21, 2019 11:00 pm
by Daniel Martinez 1k
Si2F2

Re: Problem 3F10 b

Posted: Fri Nov 22, 2019 12:13 am
by Sydney Myers 4I
Daniel Martinez 1k wrote:Si2F2


Is this due to the shape? because Si2F2 would have a more linear structure, compared with a round structure of SiF4, and higher surface area makes for higher intermolecular forces, specifically London Dispersion Forces.

Re: Problem 3F10 b

Posted: Sat Nov 23, 2019 3:59 pm
by ValerieChavarin 4F
Sydney Myers 4H wrote:
Daniel Martinez 1k wrote:Si2F2


Is this due to the shape? because Si2F2 would have a more linear structure, compared with a round structure of SiF4, and higher surface area makes for higher intermolecular forces, specifically London Dispersion Forces.

I believe this question is dependent on polarity, no shape for size.

Re: Problem 3F10 b

Posted: Sat Nov 23, 2019 6:51 pm
by 904914037
Because SiF4 is a nonpolar molecule, it is only capable of having induced dipole-induced dipole bonds (London Forces). Si2F2, on the other hand, is a polar molecule--which you can determine from drawing the lewis structure and examining its molecular geometry/shape--which means it is capable of having dipole-dipole bonds which are stronger than London Forces, meaning that Si2F2 has the stronger IMFs.

Re: Problem 3F10 b

Posted: Sat Nov 23, 2019 8:26 pm
by Mallika Chimpiri 3K
Si2F2 has stronger intermolecular forces because it is more polar. SiF4 is non polar.

Re: Problem 3F10 b

Posted: Sat Nov 23, 2019 9:08 pm
by HanaAwad_4B
Because SiF4 is nonpolar, it has lower intermolecular forces than Si2F2 which is polar.