We’re being asked to identify theoxidation state that carboninCO32– (carbonate ion).
You are watching: What is the oxidation state of the carbon atom in the carbonate ion, co3 2−?
The rules because that oxidation states are as follows:
A. Basic Rules:
1. Because that an atom in that elemental type (Zn, Cl2, C(graphite), etc.) O.S. = 0
2. For an ion (Li+, Al3+, etc.) O.S. = charge
B. Particular Rules:
1. Team 1A O.S. = +1
2. Group 2A O.S. = +2
3. Hydrogen O.S. = +1, v nonmetals
O.S. = –1 v metals and also boron
4. Fluorine O.S. = –1
5. Oxygen O.S. = –1 in peroxides (X2O2, X = team 1A)
O.S. = –1/2 in superoxides (XO2, X = team 1A)
O.S. = –2 in other compounds
6. Group 7A O.S. = –1 (except as soon as bonded come O)
Since CO32– is neithera peroxide or superoxide,the oxidation state of every oxygen atom is –2.
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What is the oxidation state the the carbon atom in the lead carbonate ion, CO32-?
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