Problem 3F10 b

[Diana_Diep2I]

Which structure has stronger IMFs? SiF4 or Si2F2?

[Daniel Martinez 1k]

Si2F2

[Sydney Myers 4I]

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.

[ValerieChavarin 4F]

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.

[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.

[Mallika Chimpiri 3K]

Si2F2 has stronger intermolecular forces because it is more polar. SiF4 is non polar.

[HanaAwad_4B]

Because SiF4 is nonpolar, it has lower intermolecular forces than Si2F2 which is polar.