P, S, Cl accomodating more than 8 valence e-

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KimberlySalinas_2A
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Joined: Wed Sep 21, 2016 2:57 pm

P, S, Cl accomodating more than 8 valence e-

Postby KimberlySalinas_2A » Fri Oct 21, 2016 11:52 pm

P, S, & Cl can accomodate more than 8 valence electrons, but how much they can accomodate?

Jimmy Zhou 3D
Posts: 30
Joined: Sat Jul 09, 2016 3:00 am

Re: P, S, Cl accomodating more than 8 valence e-

Postby Jimmy Zhou 3D » Sat Oct 22, 2016 11:11 am

If we look at the Periodic Table, P, S, Cl are on the third period, which means that they can use the 3d orbital to have an expanded octet. That being said, P has 5 Valence e- S has 6 valence e- and Cl has 7 valence e-. The total number of bonds that can be made for P is 5 and for S will be 6. Usually though the six bonds would include double and single bonds to the surrounding atoms. You would rarely have something like SO6 or something crazy like that. We do have elements like Phosphoruspentachloride (Pcl5) which utilizes phosphorus's expanded octet to make 5 sigma bonds to 5 chlorine atoms. Chlorine has 7 e- except it is a small atom so it is impossible to bind many elements to it. Hope this helps somewhat.


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