## FORMAL CHARGE

$FC=V-(L+\frac{S}{2})$

april_bussey_1C
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### FORMAL CHARGE

When trying to figure out the formal charge of a bond, how do we know the amount of loan pair electrons?

Chem_Mod
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### Re: FORMAL CHARGE

Formal charge of the "atom" will depend on the number of lone pair electrons and bonding electrons you assigned for your Lewis structure.

april_bussey_1C
Posts: 30
Joined: Fri Apr 06, 2018 11:02 am

### Re: FORMAL CHARGE

Okay, sorry i'm getting used to the terms for this chapter. So, the lone pair electrons would be the electrons not shared with another atom (on the lewis structure it would be the dots on the outside of the element letters right)?

sylvie_1D
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### Re: FORMAL CHARGE

I find that drawing out the electron configuration helps give a good visual on how many lone pairs there are.

Bianca Nguyen 1B
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Joined: Fri Apr 06, 2018 11:04 am

### Re: FORMAL CHARGE

Also, I believe the amount of lone pair electrons will be the electrons on an atom that are not shared through bonds.

Bianca Nguyen 1B
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Joined: Fri Apr 06, 2018 11:04 am

### Re: FORMAL CHARGE

Yes, I think they are the dots!

octaviahuang1f
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Joined: Fri Apr 06, 2018 11:03 am

### Re: FORMAL CHARGE

Yes, I agree that the lone pairs are the dots surrounding that letter. If you subtract the valence electron by these lone pairs and 1/2 the bonding electrons, you get the formal charge. Hope this helps!

Maria Roman 1A
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### Re: FORMAL CHARGE

the lone pair electrons would be the dots

Jessica Lancisi - 1I
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### Re: FORMAL CHARGE

Can the lone pair electrons also be shown as lines on the sides of the atom?

Neha Divi 1K
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Joined: Fri Apr 06, 2018 11:02 am

### Re: FORMAL CHARGE

The lines represent a bond between two atoms. Drawing a line on atom to represent a lone pair would not represent what the structure actually looks like since there is no bond. So when drawing lone pairs, just use the dots.