## TEST 3

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

Anne Kim 3F
Posts: 34
Joined: Fri Sep 28, 2018 12:25 am

### TEST 3

Does anyone know if the equation for the FC will be provided on test 3?

Mukil_Pari_2I
Posts: 87
Joined: Fri Sep 28, 2018 12:29 am

### Re: TEST 3

The only equations given are the ones on the sheet given on every test. The Formal charge equation is just FC = Valence - [Lone Pairs + (1/2 Bonding Pairs)]. It would behoove you to memorize it.

Anne Kim 3F
Posts: 34
Joined: Fri Sep 28, 2018 12:25 am

### Re: TEST 3

Mukil_Pari_4H wrote:The only equations given are the ones on the sheet given on every test. The Formal charge equation is just FC = Valence - [Lone Pairs + (1/2 Bonding Pairs)]. It would behoove you to memorize it.

I noticed that there was an extra equation given in test 2 compared to test 1 so I was wondering in case^^
Thank you though!

lukezhang2C
Posts: 59
Joined: Fri Sep 28, 2018 12:18 am

### Re: TEST 3

I would not think so, though it's a relatively simple formula so they might expect you to memorise it.

Marwan Masri 3B
Posts: 31
Joined: Fri Sep 28, 2018 12:23 am

### Re: TEST 3

You don't need the formula; count how many electrons are associated with an element and subtract the number of electrons from the number of valence electrons of that element.