Posted by mandy on Friday, November 14, 2008 at 10:40pm.
We can't draw pictures on these boards.
Here is a try at it with some comments to help.
F
|
Si-F
|
F
OK. Replace each | with two dots (for two electrons). Add two dots left, top, and right side of each F.
Add one more F with two dots between F and S. Then two more dots left, top, and bottom of the F.
Now add an oxygen atom bonded to the Si with 4 dots. Add two dots to top and two more to bottom of oxygen. This will give a formal charge, unless I miscalculated, of zero on F, O, and Si and gives 8 electrons around O and F and 12 around Si. I hope this helps.
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