An aqueous blue coloured solution of a transition metal sulphate reacts with `H_(2)S` to give a black precipitate. The black precipitate dissolves in `50%` nitric acid forming a blue coloured solution. The blue solution on treatment with KI in weakly acidic medium turns yellow`//` brown and produces a white precipitate. Identify the transition metal ion from the following ions.

An aqueous blue-coloured solution of a transition metal sulphate reacts with H_2S I acidic medium to give a black precipitate A which is insoluble in warm auqous solution of KOH. The blue solution on treatment with KI in weakly acidic medium turns yellow and produces a white precipitate B. Identify the transition metal ion. write the chemical reactions involved in the formation of A and B.

An aqueous blue coloured solution of a transition metal sulphate reacts with H2S in acidic medium to give a black precipitate A, which is insoluble in warm aqueous solution of KOH. The blue solution an treatment with KI is weakly acidic medium, turns yellow and produces a white precipitate B. Identify the transition metal ion. Write the chemical reactions involved in the formation of A and B.

A metal salt solution gives a yellow precipitate with silver nitrate.The precipitate dissolves in dilute nitric acid as well as in dilute ammonia solution.The solution contains :

A metal nitrate reacts with KI to give a black precipitate which addition of excess of KI converts into orange colour solution. The cation of metal nitrate is:

A metal nitrate reacts with KI solution to give a black precipitate which on addition of excess of KI solution forms an orange coloured solution. The cation of metal nitrate is :

A metal nitrate reacts with KI to give a black precipitate which on addition of excess of KI convert into orange colour solution. The cation of metal nitrate is