Among the following , identify the species with an atom in +6 oxidaito

1.	Among the following , identify the species with an atom in +6 oxidaiton state of metal
Answer» `MnO_(4)^(-)` `Cr(CN)_(6)^(3-)` `NiF_(6)^(2-)` `CrO_(2)CI_(2)` Solution :oxidation of stte of Cr is +6 `(Cr_(2))O_(7))^(2-)+14H^(+)+6E^(-)rarr2Cr^(3+)+7H_(2)O` Equivalent MASS of `K_(2)Cr_(2)O_(7)`=(Molecular)/(6)mass`

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