What is chemical formula for cobalt oxide?

Answer 1

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

Answer 2

Co

It's an element, so it only requires one symbol. Not to be confused with CO, which is carbon monoxide, a dangerous gas.

Answer 3

The chemical formula for Cobalt Chloride is CoCl2

Answer 4

Cobalt is a metal, so it retains solely its elemental symbol: Co.

Answer 5

Cobalt carbonyl: C8Co2O8

Answer 6

CoO, Co2O3, Co3O4