# Problem: Give the oxidation state of the metal species in each complex.[Co(NH3)5Cl]Cl2 [Ru(CN)3(CO)2]3-

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86% (424 ratings)
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We’re being asked to determine the oxidation states of the metal species in each complex.

The rules for oxidation states are as follows:

A. General Rules:

1. For an atom in its elemental form (Zn, Cl2, C(graphite), etc.)    O.S. = 0

2. For an ion (Li+, Al3+, etc.)                                                       O.S. = charge

B. Specific Rules:

1. Group 1A              O.S. = +1

2. Group 2A              O.S. = +2

3. Hydrogen              O.S. = +1, with nonmetals

O.S. = –1 with metals and boron

4. Fluorine                 O.S. = –1

5. Oxygen                  O.S. = –1 in peroxides (X2O2, X = Group 1A)

O.S. = –1/2 in superoxides (XO2, X = Group 1A)

O.S. = –2 in other compounds

6. Group 7A              O.S. = –1 (except when bonded to O)

86% (424 ratings) ###### Problem Details

Give the oxidation state of the metal species in each complex.

[Co(NH3)5Cl]Cl2

[Ru(CN)3(CO)2]3-

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