what elements does nickel have an unstable reaction with
Nickel metal does react with fluorine gas, F 2, but only slowly. This makes nickel an important metal for containers of fluorine. The dichloride, NiCl 2, dibromide, NiBr 2, and diiodide, NiI 2, are formed in the reactions of nickel metal and chlorine, Cl 2, bromine, Br 2, or iodine, I 2.eaction of nickel with air. Nickel metal does not react with air under ambient conditions. Finely divided nickel metal reacts readily with air and in this form may be pyrophoric.