resonance structures

Moderators: Chem_Mod, Chem_Admin

Agustina Santa Cruz 2F
Posts: 93
Joined: Wed Sep 30, 2020 10:01 pm

resonance structures

Postby Agustina Santa Cruz 2F » Sun Nov 15, 2020 8:37 pm

How do you know which resonance structure contributes most heavily to the true structure of the molecule?

Jasmine Ho 3I
Posts: 89
Joined: Wed Sep 30, 2020 9:41 pm

Re: resonance structures

Postby Jasmine Ho 3I » Sun Nov 15, 2020 8:45 pm

The ones that contribute the most are the ones that have formal charges closer to zero for all of the atoms in the molecule because neutral atoms require the least energy and therefore are more stable.

Victoria_Sauceda_1B
Posts: 86
Joined: Wed Sep 30, 2020 9:38 pm

Re: resonance structures

Postby Victoria_Sauceda_1B » Sun Nov 15, 2020 8:47 pm

It’ll be the one with the charges closest to zero

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

Re: resonance structures

Postby Hailey Qasawadish 2J » Sun Nov 15, 2020 8:48 pm

The resonance structure that contributes most is the one with the formal charges closest to 0. The sum of the formal charges should give you the overall charge of the structure.

Jonathan Malau 1F
Posts: 82
Joined: Wed Sep 30, 2020 9:31 pm

Re: resonance structures

Postby Jonathan Malau 1F » Sun Nov 15, 2020 8:59 pm

The structure with the least number of formal charges is more stable. Also, the most stable resonance structure will have negative charges on the most electronegative atoms and positive charges on the least electronegative atoms (of course, the most stable resonance structure will have a full octet on every atom).

nayha a 1E
Posts: 96
Joined: Wed Sep 30, 2020 9:54 pm

Re: resonance structures

Postby nayha a 1E » Sun Nov 15, 2020 9:01 pm

That would be the resonance structure with the charge closest to zero. This is because a 0 charge is the most stable structure.

emmaferry2D
Posts: 118
Joined: Wed Sep 30, 2020 9:47 pm

Re: resonance structures

Postby emmaferry2D » Sun Nov 15, 2020 9:03 pm

I beileive that it will be the resonance structure thats formal charge is closest to 0. (you can find formal charge of an atom by subtracting the total # of shared electrons/2 + # of lone electrons from the # of valence electrons the atom holds

joshtully
Posts: 92
Joined: Wed Sep 30, 2020 9:36 pm

Re: resonance structures

Postby joshtully » Sun Nov 15, 2020 9:29 pm

The resonance structure with charges closest to zero will contribute the most.

Lauren Strickland 1B
Posts: 89
Joined: Wed Sep 30, 2020 9:47 pm

Re: resonance structures

Postby Lauren Strickland 1B » Sun Nov 15, 2020 9:35 pm

I think that would be the resonance structure with the charge closest to zero as it would be the most stable.

Caelin Brenninkmeijer 1G
Posts: 90
Joined: Wed Sep 30, 2020 9:50 pm

Re: resonance structures

Postby Caelin Brenninkmeijer 1G » Sun Nov 15, 2020 9:38 pm

It would be the structure with the charge closest to zero. This is because it's the closest to an octet, which is the most stable structure.

Zach Richardson 2f
Posts: 68
Joined: Wed Sep 30, 2020 9:32 pm

Re: resonance structures

Postby Zach Richardson 2f » Sun Nov 15, 2020 11:49 pm

Everyone is saying that it would be the one with formal charges closest to 0, but as we see in sapling #4 this is just a guideline! The only real way (that we know of so far) is to observe the bond lengths experimentally.


Return to “Resonance Structures”

Who is online

Users browsing this forum: No registered users and 1 guest