do we nee to memorize the octet exceptions?

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Kailie_Giebink_1E
Posts: 26
Joined: Fri Apr 06, 2018 11:02 am

do we nee to memorize the octet exceptions?

Postby Kailie_Giebink_1E » Thu Jun 14, 2018 1:39 pm

will we need to know this for the test??

Joanna Pham - 2D
Posts: 113
Joined: Fri Apr 06, 2018 11:04 am

Re: do we nee to memorize the octet exceptions?

Postby Joanna Pham - 2D » Thu Jun 14, 2018 2:09 pm

i think all you need to know is that elements in period 3 and below can have expanded octets, and that H, Li, Be, and He don't have full octets

michelle
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: do we nee to memorize the octet exceptions?

Postby michelle » Sat Oct 27, 2018 10:18 pm

I think so. But there is only 4 of them.

Nicole Elhosni 2I
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Re: do we nee to memorize the octet exceptions?

Postby Nicole Elhosni 2I » Sat Oct 27, 2018 11:14 pm

You don't really have to memorize the octet exceptions because with the electron configuration of the elements and their ions, it sort of does it for you! For hydrogen to be stable (and to be stable is to have a full valence shell), it only needs to gain one electron because the valence shell is 1s. Helium is already stable because its valence shell is full at 1s^2. For lithium and berylium, you know that both of them are metals and most likely form cations (Lithium is 1+ and Berylium is 2+), so when they lose electrons, they will form the same electronic configuration as the nearest noble gas, which is He, so they won't have the full octet either (because the first energy level only has the s orbital)!

Karla_Ocampo 4E
Posts: 32
Joined: Tue Nov 21, 2017 3:01 am

Re: do we nee to memorize the octet exceptions?

Postby Karla_Ocampo 4E » Sun Oct 28, 2018 10:08 am

I think there are only some we need to know, I think he listed them in class. I believe they were: H, He, Li, and Be.

Ivan Tadeja 4B
Posts: 31
Joined: Fri Sep 28, 2018 12:28 am

Re: do we nee to memorize the octet exceptions?

Postby Ivan Tadeja 4B » Sun Oct 28, 2018 11:52 pm

Kailie_Giebink_1E wrote:will we need to know this for the test??


I would memorize these just in case. Overall it's couldn't hurt just to memorize the 4 exceptions, but it would benefit more if you knew the reasoning and concepts behind. They can help you understand electron configurations as a concept all together.

Kaylee Kang 1G
Posts: 65
Joined: Fri Sep 28, 2018 12:24 am

Re: do we nee to memorize the octet exceptions?

Postby Kaylee Kang 1G » Mon Oct 29, 2018 11:28 am

I'm pretty sure as long as you know the exceptions he mentioned in class, you should be fine.


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