Oxidation numbers

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Nicholas Kull_3L
Posts: 30
Joined: Fri Sep 28, 2018 12:23 am

Oxidation numbers

Postby Nicholas Kull_3L » Fri Nov 30, 2018 9:17 am

How do you find the oxidation number when you just have the molecular formula?

Sydney To 1D
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

Re: Oxidation numbers

Postby Sydney To 1D » Fri Nov 30, 2018 9:29 am

Here are some basic rules for assigning oxidation numbers:
-The cation is written first in a formula, followed by the anion.
-The oxidation number of a free element is always 0.
-The oxidation number of a monoatomic ion equals the charge of the ion.
-The usual oxidation number of hydrogen is +1. Except in metal hydrides is -1.
-The sum of the oxidation number of each atom in a compound equals the charge of that compound.

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