Expanded Octet
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Re: Expanded Octet
Elements/atoms in period 3 or higher have a d-orbital in their valence shell, allowing them to accommodate more than 8e-. For example, P, S, and Cl. Hope this helps.
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Re: Expanded Octet
An atom (ex: P, S) is said to have an expanded valence shell if it has more than an octet (8 valence electrons). This is only possible when the valence shell has enough orbitals to "make space" for the extra electrons.
Re: Expanded Octet
In class I remember Phosphorus, Sulfur, and Chlorine being given as examples. Are other elements beyond these 3 capable of having an expanded octet. I have written in my notes that atoms in Period 3 or higher have d-orbitals in valence shells that accommodate additional electrons, so does that apply to other elements aside from the ones I mentioned?
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Re: Expanded Octet
Elements that have d-orbitals are able to fit more than 8 valence electrons, so they can expand the Octet.
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Re: Expanded Octet
If that is the case, why even have the Octet rule? I understand that it is an easy rule of thumb for many elements, but if it does not really apply after the d-orbital comes into play, is it really helpful?
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Re: Expanded Octet
It is stated that d-orbitals can carry more than 8e-. The examples that Dr. Lavelle gave in lecture were the elements, Chlorine, Phosphorus and Sulfur.
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