(a) A powdered substance (A) on treatment with fusion mixture gives a green coloured compound (B).
(b) The solution of (B) on acidification with hot dilute `H_(2)SO_(4)` gives a pink coloured compound (C).
(c) The aqueous solution of (A) on treatement with excess of `NaOH` and bromine water gives a compound (D).
(d) A solution of (D) in conc. `HNO_(3)` with lead dioxide at boiling temperature produces a compound (E), which has of the same colour as that of (C).
(e) A solution of (A) in dilute HCI on treatment with a solution of barium chloride gave a white precipitate of compound (F), which was insoluble in conc. `HNO_(3)` and conc. `HCI`.
Compound (C) and (E) are coloured due to:

Options

A. d-d transition
B. covalent nature
C. charge transfer
D. all of these

Answer

C

Explanation

(A) `MnSO_(4)` (B) `Na_(2)MnO_(4)` (C) `HMn_(4)`
(D) `MnO_(2)` (E) `HMnO_(4)` (F) `BaSO_(4)`