## Oxidation Number & Bonds

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

Posts: 35
Joined: Fri Apr 06, 2018 10:02 am

### Oxidation Number & Bonds

Hi,
I was looking at other posts (from last year) about oxidation numbers (for example 3.23 in the book) and they said for Cl, the oxidation number could be +7 or -1 in order to reach an octet in bonds. When elements bond together, does the oxidation number used just depend on which elements are involved? Like using +7 or -1?

hannahtweedy
Posts: 29
Joined: Tue Nov 21, 2017 3:00 am

### Re: Oxidation Number & Bonds

I would believe so? Sort of like whichever value is easiest to achieve with the elements at hand to achieve the desired results

Neha Divi 1K
Posts: 31
Joined: Fri Apr 06, 2018 10:02 am

### Re: Oxidation Number & Bonds

Yup! I think the oxidation numbers are essentially a way to keep track of how many electrons an atom has, thus, depending on the other atoms involved.

Patience Olsen 1A
Posts: 28
Joined: Fri Apr 06, 2018 10:04 am

### Re: Oxidation Number & Bonds

Cl will basically always become Cl- (oxidation number -1) to achieve a full octet. Gaining one electron is much easier than losing 7 electrons. Some other elements, however, have almost equally likely oxidation states. One example is Cu, which can become Cu+ (oxidation number +1) or Cu2+ (oxidation number 2+).

AnthonyDis1A
Posts: 30
Joined: Fri Apr 06, 2018 10:05 am

### Re: Oxidation Number & Bonds

Also, I think that the group where an element is located plays a role in its bonding. So to reinforce the previous post, Cl usually tries to gain one more electron to get a full octet because it is a halogen (Group 7).

Toru Fiberesima 1L
Posts: 49
Joined: Fri Apr 06, 2018 10:02 am

### Re: Oxidation Number & Bonds

Seeing as the question asks for a maximum and a minimum oxidation number, can there be an intermediary oxidation number or must the answer be +7 and/or -1?

Jessica Lancisi - 1I
Posts: 29
Joined: Fri Apr 06, 2018 10:03 am

### Re: Oxidation Number & Bonds

I dont think there is an intermediary because If it gained any less than 7 electrons/lost any more than 1 it would no longer have an octet