Expanded Valence Shells


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Fatemah Yacoub 1F
Posts: 114
Joined: Thu Jul 11, 2019 12:16 am

Expanded Valence Shells

Postby Fatemah Yacoub 1F » Fri Oct 25, 2019 9:35 pm

I was confused as to why P,S, and Cl have an expanded octet if they have no electrons in the d orbital?

Ellen Amico 2L
Posts: 101
Joined: Thu Sep 19, 2019 12:16 am

Re: Expanded Valence Shells

Postby Ellen Amico 2L » Fri Oct 25, 2019 9:44 pm

They normally don't have electrons in the d-orbital, but because they have a n=3, the d-orbital exists and is available to them to fill up with more than 8 electrons, which allows them to have an expanded octet.

TYun_1C
Posts: 52
Joined: Wed Sep 11, 2019 12:16 am

Re: Expanded Valence Shells

Postby TYun_1C » Fri Oct 25, 2019 9:52 pm

The 3d orbital is not used by these atoms normally, but remains open to be used when bonding. After the 3s and 3p orbitals fill up, the 3D can be used to hold extra electrons during bonding.

Michelle Shin 4B
Posts: 50
Joined: Thu Jul 25, 2019 12:17 am

Re: Expanded Valence Shells

Postby Michelle Shin 4B » Sat Oct 26, 2019 3:01 pm

The elements P, S, and Cl can accommodate more than 8 valence electrons since atoms in period 3 or higher have d-orbitals that can accommodate more electrons.

Ian Morris 3C
Posts: 101
Joined: Wed Sep 18, 2019 12:18 am

Re: Expanded Valence Shells

Postby Ian Morris 3C » Sun Oct 27, 2019 11:11 pm

Michelle Shin 4B wrote:The elements P, S, and Cl can accommodate more than 8 valence electrons since atoms in period 3 or higher have d-orbitals that can accommodate more electrons.

Are they the only three that can do this?

ZevMarx-Kahn3C
Posts: 52
Joined: Sat Aug 17, 2019 12:17 am

Re: Expanded Valence Shells

Postby ZevMarx-Kahn3C » Sun Oct 27, 2019 11:41 pm

Could they hypothetically have so many bonds that this d orbital is filled?


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