What are the exceptions to the octet rule?

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tonyhu
Posts: 57
Joined: Tue Sep 24, 2019 12:17 am

What are the exceptions to the octet rule?

Postby tonyhu » Wed Oct 23, 2019 11:33 pm

H, He, and what else?

Caitlyn Tran 2E
Posts: 100
Joined: Fri Aug 09, 2019 12:15 am

Re: What are the exceptions to the octet rule?

Postby Caitlyn Tran 2E » Thu Oct 24, 2019 12:18 am

Li and Be are also exceptions

Lindsey Chheng 1E
Posts: 110
Joined: Fri Aug 30, 2019 12:16 am

Re: What are the exceptions to the octet rule?

Postby Lindsey Chheng 1E » Thu Oct 24, 2019 12:58 am

some atoms are stable with fewer than electrons: H, B, Be
some atoms are stable with more than 8 electrons: P, S, Cl, As, SE, Br, Kr, Sb, Te, I, Xe

Kylie Lim 4G
Posts: 110
Joined: Sat Aug 17, 2019 12:15 am

Re: What are the exceptions to the octet rule?

Postby Kylie Lim 4G » Thu Oct 24, 2019 9:42 am

I don't think we have gone over this yet, but in addition to H, He, Li, Be, some elements can have an expanded octet by using the d/f orbitals.

Justin Sarquiz 2F
Posts: 106
Joined: Fri Aug 30, 2019 12:15 am

Re: What are the exceptions to the octet rule?

Postby Justin Sarquiz 2F » Thu Oct 24, 2019 10:09 am

Instead of memorizing the elements, just remember that the exceptions to the octet rule are the the first four elements because they would need to gain too many electrons to have an octet, which is very difficult.

emma brinton_3B
Posts: 53
Joined: Fri Aug 09, 2019 12:17 am

Re: What are the exceptions to the octet rule?

Postby emma brinton_3B » Thu Oct 24, 2019 10:37 am

the exceptions to the octet rule are H, He, Li , and Be! also if the electron is in the 3rd period or above they can occupy greater than 8 electrons going beyond the octet rule.


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