When a Li-ion battery is fully discharged, the cathode has an empiricalformula of LiCoO2. What is the oxidation number of cobalt in this state?Does the oxidation number of the cobalt increase or decrease as thebattery charges?

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Chapter19: Oxidation-reduction(electron Transfer) Reactions
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When a Li-ion battery is fully discharged, the cathode has an empirical
formula of LiCoO2. What is the oxidation number of cobalt in this state?
Does the oxidation number of the cobalt increase or decrease as the
battery charges?

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