Exception to Lewis Structure?

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Betty Wolkeba section 1L
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Joined: Fri Apr 06, 2018 11:05 am

Exception to Lewis Structure?

Postby Betty Wolkeba section 1L » Sat May 19, 2018 8:58 pm

Can someone explain why Chlorine in this Lewis structure is allowed to break the octet rule and have more? Are there any other elements like Chlorine that might have this exception as well?
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AnnaYan_1l
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Re: Exception to Lewis Structure?

Postby AnnaYan_1l » Sat May 19, 2018 9:05 pm

Hi Betty! I was told in my discussion that anything below this line (see attached image) could potentially have more than 8 electrons.
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Cindy Nguyen 1L
Posts: 48
Joined: Fri Apr 06, 2018 11:04 am

Re: Exception to Lewis Structure?

Postby Cindy Nguyen 1L » Sun May 20, 2018 12:46 am

This relates to "expanded octets." Chlorine is an element that can have an expanded octet. There are discussions on Chemistry Community about expanded octets.

Johanna Caprietta 1E
Posts: 30
Joined: Fri Apr 06, 2018 11:02 am

Re: Exception to Lewis Structure?

Postby Johanna Caprietta 1E » Sun May 20, 2018 9:30 am

I just want to make sure that I have the right idea. So when drawing a Lewis Structure you have to choose a central atom with the lowest energy but they cannot include metals and hydrogen. Is this correct to some extent?

Vienna Cimetta 1L
Posts: 31
Joined: Thu Feb 01, 2018 3:01 am

Re: Exception to Lewis Structure?

Postby Vienna Cimetta 1L » Sun May 20, 2018 1:44 pm

It's because Cl has the ability to access the 3d-orbtial and electrons can go into this orbital and exceed the octet.


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