A) \[Mn{{O}^{2-}}\]and \[M{{n}^{3+}}\]
B) \[M{{n}^{3+}}\]and \[M{{n}^{2+}}\]
C) \[M{{n}^{2+}}\]and \[M{{n}^{3+}}\]
D) \[Mn{{O}_{2}}\]and \[M{{n}^{2+}}\]
E) \[M{{n}^{2+}},Mn{{O}_{2}}\]
Correct Answer: D
Solution :
In acidic medium: \[\overset{+7}{\mathop{KMn{{O}_{4}}}}\,\xrightarrow{{}}\overset{+2}{\mathop{MnS{{O}_{4}}}}\,\] In weak basic medium: \[KMn{{O}_{4}}\xrightarrow{{}}Mn{{O}_{2}}\]
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