Oxidation

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Jaquelinne Rodriguez-Lopez 1L
Posts: 38
Joined: Mon Apr 09, 2018 1:38 pm
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Oxidation

Postby Jaquelinne Rodriguez-Lopez 1L » Thu Jun 07, 2018 2:50 am

Maybe naming of structures won't be in the final, but I would like to know how to find the oxidation number. Can someone explain how to find an oxidation number, including those in ion structures?

Alicia Yu 1A
Posts: 30
Joined: Thu Feb 22, 2018 3:02 am

Re: Oxidation

Postby Alicia Yu 1A » Thu Jun 07, 2018 6:58 am

This website is a good reference on how to find the oxidation number.
https://socratic.org/questions/how-do-y ... a-compound

Alexis Bravo 1D
Posts: 30
Joined: Tue Nov 14, 2017 3:01 am

Re: Oxidation

Postby Alexis Bravo 1D » Sun Jun 10, 2018 11:18 pm

The oxidation number of a free element is always 0.

The oxidation number of a monatomic ion equals the charge of the ion.

The oxidation number of
H
is +1, but it is -1 in when combined with less electronegative elements.

The oxidation number of
O
in compounds is usually -2, but it is -1 in peroxides.

The oxidation number of a Group 1 element in a compound is +1.

The oxidation number of a Group 2 element in a compound is +2.

The oxidation number of a Group 17 element in a binary compound is -1.

The sum of the oxidation numbers of all of the atoms in a neutral compound is 0.

The sum of the oxidation numbers in a polyatomic ion is equal to the charge of the ion.

Megan Phan 1K
Posts: 31
Joined: Fri Apr 06, 2018 11:04 am

Re: Oxidation

Postby Megan Phan 1K » Wed Jun 13, 2018 4:14 am

For practice, I wrote these on my periodic table while studying, and over time you see the pattern and are able to memorize easier.

Group 1: +1
Group 2: +2
Ag: + Zn: +2
Group 13: +3
Group 14: 0
Group 15: -3
Group 16: -2
Group 17: -1


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