We’re being asked to determine theoxidation state the 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. For an atom in that is elemental type (Zn, Cl2, C(graphite), etc.) O.S. = 0
2. For an ion (Li+, Al3+, etc.) O.S. = charge
B. Details Rules:
1. Group 1A O.S. = +1
2. Group 2A O.S. = +2
3. Hydrogen O.S. = +1, through nonmetals
O.S. = –1 through 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 = team 1A)
O.S. = –2 in other compounds
6. Team 7A O.S. = –1 (except as soon as bonded to O)
Since CO32– is neithera peroxide or superoxide,the oxidation state of each oxygen atom is –2.
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What is the oxidation state of the carbon atom in the carbonate ion, CO32-?
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