Group 13 Elements

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Yeprem
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Group 13 Elements

Postby Yeprem » Wed Nov 04, 2020 11:38 pm

Is it okay for ALL group 13 elements to not have an octet when forming bonds?

Bronson Mathos 1H
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Re: Group 13 Elements

Postby Bronson Mathos 1H » Thu Nov 05, 2020 1:17 am

Yes, I believe all elements in group 13 do not have to form an octet when forming bonds as they are exempt from the octet rule.

Madilyn Schindler 3E
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Re: Group 13 Elements

Postby Madilyn Schindler 3E » Thu Nov 05, 2020 1:22 am

I would look at it this way. There are 3 general exceptions to having an octet:
1. When the molecule has an odd number of valence electrons.
2. When the molecule has a central atom with more valence electrons than needed to get to 8.
3. When the molecule has a central atom with too few valence electrons to get to 8.
I think it generally just depends on each molecule. Hope that helps!

jessicasilverstein1F
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Re: Group 13 Elements

Postby jessicasilverstein1F » Thu Nov 05, 2020 12:47 pm

I believe this is correct and that all group 13 elements are an exception to the octet rule

Jaden Ji 2K
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Re: Group 13 Elements

Postby Jaden Ji 2K » Thu Nov 05, 2020 1:58 pm

I think Group 13 doesn't require an octet because they require too many electrons to reach the octet.

Adrienne Yuh 2B
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Re: Group 13 Elements

Postby Adrienne Yuh 2B » Thu Nov 05, 2020 2:09 pm

Yes! I think all of the Group 13 Elements don't require an octet.

AmyHo2K
Posts: 94
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Re: Group 13 Elements

Postby AmyHo2K » Thu Nov 05, 2020 7:26 pm

As others had said, Group 13 elements don't require an octet since they would require too many electrons to get one which is unrealistic.

derickngo3d
Posts: 79
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Re: Group 13 Elements

Postby derickngo3d » Thu Nov 05, 2020 9:24 pm

Yeah, I think this is the case for Group 13 elements.

Tiao Tan 3C
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Joined: Wed Sep 30, 2020 9:59 pm

Re: Group 13 Elements

Postby Tiao Tan 3C » Fri Nov 06, 2020 1:03 am

It is okay for all group 13 elements to not have an octet because they all have 3 valence electrons that requires an unrealistic amount of electrons to form octet.

Inderpal Singh 2L
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Re: Group 13 Elements

Postby Inderpal Singh 2L » Fri Nov 06, 2020 2:54 am

I agree with everyone else that group 13 elements do not require an octet.

Isabelle Hales 1J
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Re: Group 13 Elements

Postby Isabelle Hales 1J » Fri Nov 06, 2020 11:42 am

Are there any cases when a group 13 element forms a complete octet? Or is this too unrealistic to happen in the molecules we are studying? Should we expect group 13 elements to not form a complete octet and instead become Lewis acids?

Marisa Gaitan 2D
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Re: Group 13 Elements

Postby Marisa Gaitan 2D » Fri Nov 06, 2020 12:09 pm

Isabelle Hales 3L wrote:Are there any cases when a group 13 element forms a complete octet? Or is this too unrealistic to happen in the molecules we are studying? Should we expect group 13 elements to not form a complete octet and instead become Lewis acids?


I believe you are right. It is too unreliable for group 13 elements to gain 5 electrons since that just is not likely to happen. But yes, in the lecture for example, BF3 only has 6 valence electrons and can complete the octet if another atom (like a lewis base) provides electrons. And this would be a coordinate covalent bond.

Eunice_Castro_1G
Posts: 91
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Re: Group 13 Elements

Postby Eunice_Castro_1G » Fri Nov 06, 2020 12:14 pm

Hello! It is all of group 13 elements that are an exception to the octet rule. Hope this helps!

AmyHo2K
Posts: 94
Joined: Wed Sep 30, 2020 9:39 pm

Re: Group 13 Elements

Postby AmyHo2K » Fri Dec 11, 2020 12:15 am

I had the same question and the responses were helpful. It makes sense why they're not require to have an octet.


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