Nickel oxide may refer to:
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Nickel(II) oxide, NiO, green, well-characterised oxide
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Nickel(III) oxide
Nickel (III) oxide is the inorganic compound
In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subf ...
, Ni
2O
3, black, not well-characterised oxide
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Oxonickelates
{{Chemistry index