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oxidation state of o in cao2
oxidation state of o in cao
oxidation state of o in caro's acid
oxidation state of o in co2
oxidation state of o in coh2
oxidation state of o in bao2
oxidation state of o in cro5
oxidation state of o in ko2
oxidation state of o in so4 2-
oxidation state of o in o2
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