Confusion about lone pair placement

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RichardValdez1L
Posts: 59
Joined: Fri Apr 06, 2018 11:05 am

Confusion about lone pair placement

Postby RichardValdez1L » Sun Jun 03, 2018 10:40 pm

So it's to my understanding that the bond pairs have to be placed the furthest from each other, but I'm still confused on where exactly to place the lone pair? I remember hearing something about 90 degrees...

MariahClark 2F
Posts: 60
Joined: Wed Nov 15, 2017 3:04 am

Re: Confusion about lone pair placement

Postby MariahClark 2F » Sun Jun 03, 2018 10:50 pm

Are you talking about when trying to determine shape? If so I believe it usually appears on the central atom. At least that is what I have seen in most examples. So like if you are drawing VSEPR for SF(4), there would be two 90 degree lone pair bonding pair repulsions pushing the other fluorines away. This would look like the see-saw shape.

kellyz_1C
Posts: 33
Joined: Fri Apr 06, 2018 11:05 am

Re: Confusion about lone pair placement

Postby kellyz_1C » Tue Jun 05, 2018 1:52 am

you should place the lone pairs in locations that maximize the space between them since they take up a lot of space.


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