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

Darren Nguyen 1F
Posts: 60
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?

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?

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?

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
Posts: 58
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?

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?

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