2Ni + O2 = 2NiO
NiO + 2HBr = NiBr2 + H2O
NiBr2 + 2NaOH = Ni(OH)2 + 2NaBr
Ni(OH)2 + 2HCl = NiCl2 + 2H2O
2Ni + O2 = 2NiO
NiO + 2HBr = NiBr2 + H2O
NiBr2 + 2NaOH = Ni(OH)2 + 2NaBr
Ni(OH)2 + 2HCl = NiCl2 + 2H2O