If the overall charge of a Lewis Structure is -1, does that mean all the atoms' charges are adding to -1?

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Darren Nguyen 1F
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Joined: Sat Sep 14, 2019 12:15 am

If the overall charge of a Lewis Structure is -1, does that mean all the atoms' charges are adding to -1?

Postby Darren Nguyen 1F » Tue Oct 29, 2019 7:25 pm

So for ions, do the formal charges need to equal the charge of the whole molecule?

Michael Nguyen 1E
Posts: 120
Joined: Sat Aug 17, 2019 12:17 am

Re: If the overall charge of a Lewis Structure is -1, does that mean all the atoms' charges are adding to -1?

Postby Michael Nguyen 1E » Tue Oct 29, 2019 7:37 pm

Yes, if you are drawing a Lewis structure for an ion, the sum of all of the formal charges in the ion must equal the total charge of the ion.

MMckinney_4H
Posts: 61
Joined: Sat Sep 28, 2019 12:16 am

Re: If the overall charge of a Lewis Structure is -1, does that mean all the atoms' charges are adding to -1?

Postby MMckinney_4H » Tue Oct 29, 2019 9:53 pm

Yes, they should all add up to -1. The individual charges can vary so long as the entire molecule's overall charge matches the given charge. But you must also keep in mind that the individual charges should be the lowest that they can be.

Dakota Walker 1L
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Joined: Wed Sep 18, 2019 12:17 am

Re: If the overall charge of a Lewis Structure is -1, does that mean all the atoms' charges are adding to -1?

Postby Dakota Walker 1L » Tue Oct 29, 2019 10:01 pm

Yes! The molecule will have an overall charge of -1, so each atom will have its own charge (likely -2 and +1) allowing the whole molecule to add to -1.

Doreen Liu 4D
Posts: 54
Joined: Wed Sep 11, 2019 12:17 am

Re: If the overall charge of a Lewis Structure is -1, does that mean all the atoms' charges are adding to -1?

Postby Doreen Liu 4D » Tue Oct 29, 2019 10:13 pm

Yes because the formal charges have to add/subtract to -1.


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