4.19 b)

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Andrew Nguyen 2I
Posts: 68
Joined: Fri Sep 29, 2017 7:07 am

4.19 b)

Postby Andrew Nguyen 2I » Tue Nov 21, 2017 10:47 pm

This is more of a Lewis structure question however I was wondering why Sn-Cl2 only has 6 valence electrons around it in the molecule; obviously this is an exception to the octet rule, though I was wondering if anyone could explain this.

Joshua Xian 1D
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Re: 4.19 b)

Postby Joshua Xian 1D » Wed Nov 22, 2017 9:22 am

I believe it's because the formal charges are better (closer to 0) if the Sn in SnCl2 has only one lone pair and two single bonds to each Cl2. The formal charges would all be 0, vs. having 2 lone pairs of electrons and the Sn having a -2 formal charge.

Jessica Nunez 1I
Posts: 58
Joined: Thu Jul 13, 2017 3:00 am

Re: 4.19 b)

Postby Jessica Nunez 1I » Thu Nov 23, 2017 12:37 pm

Sn-Cl2 only has 6 valence electrons because the formal charge of the structure would be 0, and that is the ultimate goal when drawing Lewis dot structures.

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