## Formal Charge

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

Cytlalli 1B
Posts: 23
Joined: Fri Apr 06, 2018 11:02 am

### Formal Charge

When there is a - in front of a molecule you add an electron to the formal charge and when there is a + you subtract an electron from the overall formal charge right?

Patience Olsen 1A
Posts: 28
Joined: Fri Apr 06, 2018 11:04 am

### Re: Formal Charge

Yes, correct.

Mariah Guerrero 1J
Posts: 32
Joined: Fri Apr 06, 2018 11:03 am

### Re: Formal Charge

Yes! A - means that the molecule is an anion, meaning you ADD an electron. A + means the molecule is a cation, meaning you REMOVE an electron.

Endri Dis 1J
Posts: 33
Joined: Fri Apr 06, 2018 11:02 am

### Re: Formal Charge

Also, don't forget to express this when drawing the lewis dot structure by putting your answer in square brackets and depending on whether its an anion or cation putting the correct charge.