Octet Rule

Moderators: Chem_Mod, Chem_Admin

jessicasilverstein1F
Posts: 122
Joined: Wed Sep 30, 2020 9:57 pm

Octet Rule

Postby jessicasilverstein1F » Sat Oct 31, 2020 11:38 am

What are the elements that do not apply to the octet rule?

Lauren Sarigumba 1K
Posts: 92
Joined: Wed Sep 30, 2020 9:41 pm

Re: Octet Rule

Postby Lauren Sarigumba 1K » Sat Oct 31, 2020 11:44 am

H, He, Li, and Be are exceptions because H and He only have 1s orbitals and Li and Be only have 1s 2s orbitals

ALee_1J
Posts: 110
Joined: Wed Sep 30, 2020 9:32 pm

Re: Octet Rule

Postby ALee_1J » Sat Oct 31, 2020 11:49 am

I think there are more elements that are exceptions but Dr. Lavelle has only talked about the first four elements being exceptions to this rule.

Kyle Dizon 3A
Posts: 96
Joined: Mon Oct 05, 2020 12:16 am

Re: Octet Rule

Postby Kyle Dizon 3A » Sun Nov 01, 2020 10:54 am

The octet rule does not apply to the elements of H, He, Li, and Be. While there may be more elements that do not apply to the octet rule like Boron, Professor has only discussed these four so far.

Hailey Qasawadish 2J
Posts: 71
Joined: Wed Sep 30, 2020 9:36 pm
Been upvoted: 1 time

Re: Octet Rule

Postby Hailey Qasawadish 2J » Sun Nov 01, 2020 11:22 am

Dr. Lavelle has only mentioned the first four elements not following the octet rule. These are H, He, Li, and Be. This is due to the orbital that they are in.

Simi Kapila_3E
Posts: 90
Joined: Wed Sep 30, 2020 9:40 pm
Been upvoted: 1 time

Re: Octet Rule

Postby Simi Kapila_3E » Sun Nov 01, 2020 11:28 am

The elements that do no coincide with the octet rule are H, He, Li, and Be, they cannot get a full valence shell.

Earl Garrovillo 2L
Posts: 91
Joined: Wed Sep 30, 2020 9:55 pm

Re: Octet Rule

Postby Earl Garrovillo 2L » Sun Nov 01, 2020 12:17 pm

H, He, Li, and Be don't apply to the octet rule since they essentially only have access to the 1s subshell which will be stable with (and can only contain) two electrons. But other exceptions exist such as boron and aluminum that often don't follow the octet rule but Lavelle hasn't covered those yet so I'm afraid I can't give a more detailed answer.

Veeda Khan 2E
Posts: 52
Joined: Wed Sep 30, 2020 10:00 pm

Re: Octet Rule

Postby Veeda Khan 2E » Sun Nov 01, 2020 12:22 pm

Basically any element whose last subshell is not complete after 8 electrons.

Kyla Roche 2K
Posts: 93
Joined: Wed Sep 30, 2020 9:59 pm

Re: Octet Rule

Postby Kyla Roche 2K » Sun Nov 01, 2020 12:29 pm

H, He, Li, Be are the elements that were discussed in the lecture to not follow the octet rule which means that their valence shell can't fill to 8; this is because the only have 1s subshell so they can't reach 8 electrons.

reyvalui_3g
Posts: 85
Joined: Wed Sep 30, 2020 9:52 pm

Re: Octet Rule

Postby reyvalui_3g » Sun Nov 01, 2020 6:43 pm

If I remember clearly, later on we will be introduced to the idea of expanded octets as well. Which occur in atoms after the third period of the periodic table.

josephspindler2H
Posts: 92
Joined: Wed Sep 30, 2020 9:54 pm
Been upvoted: 1 time

Re: Octet Rule

Postby josephspindler2H » Sun Nov 01, 2020 7:00 pm

The first four elements do not abide by the octet rule (H, He, Li, Be) as they only fill the 1s and 2s subshells.

Jaclyn Schwartz 1I
Posts: 101
Joined: Wed Sep 30, 2020 9:45 pm

Re: Octet Rule

Postby Jaclyn Schwartz 1I » Sun Nov 01, 2020 10:58 pm

The elements that do not follow the octet rule are H, He, Li, and Be. They are in 1s and 2s orbitals so they can not get a full valence shell. I believe there are others but these are the only one discussed so far.

Nina Tartibi 1F
Posts: 52
Joined: Wed Sep 30, 2020 9:58 pm

Re: Octet Rule

Postby Nina Tartibi 1F » Sun Nov 01, 2020 11:29 pm

H, He, Li, and Be are the elements that don't follow the octet rule! All others should have 8 valence electrons.


Return to “Lewis Structures”

Who is online

Users browsing this forum: No registered users and 1 guest