oxidation and charge

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Kaylee Yan 4C
Posts: 20
Joined: Fri Sep 25, 2015 3:00 am

oxidation and charge

Postby Kaylee Yan 4C » Sat Nov 07, 2015 7:10 pm

how do we figure out the oxidation number of specific elements and compounds in a ligand?
and how do we know the total charge if they give the name of the ligand?

Nathan Danielsen 1G
Posts: 17
Joined: Fri Sep 25, 2015 3:00 am

Re: oxidation and charge

Postby Nathan Danielsen 1G » Sun Nov 08, 2015 12:18 am

If a ligand is neutral then its oxidation number is 0. If it is an ion, then its oxidation number is the charge of the ion. The oxidation number of the central metal atom is the difference between the charge of the molecule, and the combined charge of all the ligands.

If you are given the name of the compound then to find its charge you must know the charges of the ionic ligands present in the compound. The metal's charge will be the number in parentheses and will always be positive. Subtract all the negative charges of the ligands from the metal's charge and you will get the charge of the compound.

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