`MnO_(2)` is the most important oxide of manganese , `MnO_(2)` occurs natually as the black coloured mineral pyrolusite. It is an oxidising agent, and decomposes to `Mn_(3)O_(4)` on heating to `530^(@)`C. It is used in the preparation of potassium permanaganate and in the productioon of `Cl_(2)` gas. Over half million tonnes per year of `MnO_(2)` is used in dry batteries.
Q. `MnO_(2)` dissolves in concentrated HCl to form:

Options

A. `Mn^(4+)` ion and `Cl_(2)`
B. `Mn^(2+)` ion and `Cl_(2)`
C. `[MnCl_(4)]^(2-) and Cl_(2)`
D. only `[MnCl_(4)]^(2-)`

Answer

B