## Formal Charge of an Atom

Maya Serota 3G
Posts: 53
Joined: Tue Sep 24, 2019 12:17 am

### Formal Charge of an Atom

Could someone explain how the formal charge is assigned to an atom? Thank you!!

Myka G 1l
Posts: 100
Joined: Fri Aug 30, 2019 12:17 am

### Re: Formal Charge of an Atom

To find formal charge you use the equation FC= valence electrons-(lone pairs + number of bonds)

Posts: 100
Joined: Sat Aug 17, 2019 12:15 am

### Re: Formal Charge of an Atom

To find the formal charge of an atom, you use the formula, valence electrons = total valence electrons - lone pair electrons - bonding electrons/2.

505106414
Posts: 55
Joined: Wed Sep 18, 2019 12:17 am

### Re: Formal Charge of an Atom

Can you explain what the lone pairs part of the equation means and maybe give an example? Thank you!

Nathan Nakaguchi 1G
Posts: 102
Joined: Wed Sep 18, 2019 12:22 am
Been upvoted: 1 time

### Re: Formal Charge of an Atom

Formal Charge is assigned to an atom by following the formula: FC= V - (L+S/2) where V is the amount of valence electrons the atom has, L are the lone pairs it has (on a Lewis structure it would be the pairs of dots like ":"), and s being the bonds the atom has.

HuyHa_2H
Posts: 100
Joined: Wed Sep 11, 2019 12:15 am

### Re: Formal Charge of an Atom

Formal charge is calculated by utilizing the formula: Valence Electrons - (# of Lone Electron Pairs + # of Bonding Electrons/2).