A) \[KMn{{O}_{4}}\]
B) \[{{K}_{2}}Mn{{O}_{4}}\]
C) \[MnS{{O}_{4}}\]
D) \[MnC{{l}_{2}}\]
Correct Answer: A
Solution :
\[KMn{{O}_{4}}\]is violet in colour, hence, it does not have unpaired electron.
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