 Nickel oxide hydroxide

Nickel oxide hydroxide (often referred to as nickel hydroxide) is an inorganic compound with the chemical formula Ni(OH)₂. It is typically a green or yellow-green, solid material that is insoluble in water and commonly occurs as a hydrate, Ni(OH)₂·nH₂O, where 'n' represents the number of water molecules associated with the compound.