The total number of black colored sulfides is 6. These include \\\\(PbS, CuS, HgS, NiS, CoS, Bi_2S_3\\\\). \\\\(Bi_2S_3\\\\) in its crystalline form is dark brown but \\\\(Bi_2S_3\\\\) precipitate obtained is black in color.Hence, the correct option is A