Amongst the following, identify the species with an atom in +6 oxidati

1.	Amongst the following, identify the species with an atom in +6 oxidation state ____
Answer» `MnO_(4)^(-)` `Cr(CN)_(6)^(2-)` `NiF_(6)^(2-)` `CrO_(2)Cl_(2)` Answer :D

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