Sulfur Hexafluoride VSEPR

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

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Marni Kahn 1A
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Joined: Thu Jul 25, 2019 12:17 am
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Sulfur Hexafluoride VSEPR

Postby Marni Kahn 1A » Wed Nov 13, 2019 1:52 pm

Why does SF6 have an octahedral shape?

Kate Osborne 1H
Posts: 102
Joined: Fri Aug 30, 2019 12:16 am

Re: Sulfur Hexafluoride VSEPR

Postby Kate Osborne 1H » Wed Nov 13, 2019 1:54 pm

Octahedral shape describes a compound with 6 shared pairs of electrons and since there are 6 bonds in SF6 it is octahedral.

Sion Hwang 4D
Posts: 51
Joined: Wed Sep 18, 2019 12:21 am

Re: Sulfur Hexafluoride VSEPR

Postby Sion Hwang 4D » Wed Nov 13, 2019 5:22 pm

When considering VSEPR, you always have to look at the central atom.
In SF6, the central atom is sulfur, and there are 6 flourines singly-bonded to it. There are no lone pairs. The formal charges are all 0, so this is the most stable state of the atom.
For the shape itself in 3D, the electron pairs will arrange themselves in a way that makes them furthest apart from each other.
The resulting shape is an octahedral shape, with 90 degree bond angles between all F-S-F bonds.

KBELTRAMI_1E
Posts: 108
Joined: Sat Jul 20, 2019 12:17 am

Re: Sulfur Hexafluoride VSEPR

Postby KBELTRAMI_1E » Wed Nov 13, 2019 5:46 pm

Kate Osborne 1B wrote:Octahedral shape describes a compound with 6 shared pairs of electrons and since there are 6 bonds in SF6 it is octahedral.


the term is just misleading


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