## 6th edition 3.23

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

FrankieClarke2C
Posts: 59
Joined: Fri Sep 28, 2018 12:28 am

### 6th edition 3.23

How did they determine that the minimum oxidation number for chlorine was -1?

Andrea Zheng 1H
Posts: 61
Joined: Fri Sep 28, 2018 12:26 am

### Re: 6th edition 3.23

The oxidation number is determined by the electrons that would be added/lost to form a noble-gas configuration. Because Cl has 7 e-, it would add one electron to get to the electron configuration of Argon. Because it adds one electron, it would have an oxidation number of -1.