Lewis structure for formaldehyde

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Katie Le 3K
Posts: 73
Joined: Wed Sep 30, 2020 9:35 pm

Lewis structure for formaldehyde

Postby Katie Le 3K » Wed Nov 04, 2020 10:10 pm

How come the hydrogen in CH20 doesn't have 8 filled valence electrons like C and O

John Pham 3L
Posts: 140
Joined: Wed Sep 30, 2020 9:49 pm
Been upvoted: 4 times

Re: Lewis structure for formaldehyde

Postby John Pham 3L » Wed Nov 04, 2020 10:44 pm

Hydrogen can only hold 2 electrons in its valence shell and is an exception to the octet rule.
It only has access to the 1s subshell which holds a maximum of 2 electrons.

Thomas Vu 1A
Posts: 108
Joined: Wed Sep 30, 2020 10:08 pm
Been upvoted: 1 time

Re: Lewis structure for formaldehyde

Postby Thomas Vu 1A » Thu Nov 05, 2020 9:53 am

Just to add on, besides hydrogen, other exceptions where the atom can only have 2 valence electrons instead of a full octet are helium and lithium.

Emma Ide 2E
Posts: 50
Joined: Wed Sep 30, 2020 9:39 pm

Re: Lewis structure for formaldehyde

Postby Emma Ide 2E » Thu Nov 05, 2020 10:19 am

Hydrogen is an exception to the octet rule where it can only have 2 valence electrons, or up to the 1s state, filled.

Rose_Malki_3G
Posts: 127
Joined: Wed Sep 30, 2020 10:02 pm

Re: Lewis structure for formaldehyde

Postby Rose_Malki_3G » Thu Nov 05, 2020 10:21 am

Hydrogen is in the 1s state and therefore will not follow the octet guideline


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