What is full form of COO?
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Cobalt Oxide ie, CoO is stable at above 900°C. However, Co (cobalt) can have 2 valencies, either Co(II) or Co(III). When it is Co(II) its oxide can be written as CoO and when its in Co(III) form, the oxide will be Co3O4. The reaction of conversion from CoO to Co3O4 is given below: 3 CoO + 1/2 O2 Co3O4