SF4

[Moshi123]

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I don't understand the answer here. Can anyone explain this for me?
6 valence electrons + bonds = 10 electrons.
This calculation doesn't really make sense to me.. :S

 

[KineticFlow603]

2 electrons surrounding S for each bond to fluorine and you have 4 bonds to fluorine. So that is 2*4=8 plus you have a lone pair so that is 8+2=10.

 

[Moshi123]

2 electrons surrounding S for each bond to fluorine and you have 4 bonds to fluorine. So that is 2*4=8 plus you have a lone pair so that is 8+2=10.

Your explanation makes sense! so is that answer key wrong?

 

[KineticFlow603]

I honestly don't know what the explanation is trying to say.

 

[KineticFlow603]

I also missed this question because I didn't know what the question was asking. I think I put 6 for its number of valence electrons. But I got why it's 10 watching that video in the link.

 

[ZPederson11]

just draw the lewis dot for this one and could out all the dots around the S. This question is kinda dumb and I doubt we will see something like this on the DAT but it does make you think