1.

The pair of compounds in which both the metals are in the highest possibel oxidation state is

Answer»

`[Fe(CN)_(6)]^(4-), [Co(CN)_(6)]^(3-)`
`CrO_(2)Cl_(2).MnO_(4)^(-)`
`TiO_(2),MnO_(2)`
`[Co(CN)_(6)]^(3-),MnO_(3)`

Solution :`[Fe(CN)_(6)]^(4-)` i.e. `Fe^(2+)` (Highest for Fe is +3)
`[Co(CN)_(6)]^(3-)` i.e. `Co^(3+)` (Highest for Co)
`CrO_(2)Cl_(2)` i.e. `Cr(+6)` Highest for Cr
`MnO_(4)^(-)` i.e. `Mn(+7)` Highest for Mn
`TiO_(2)` i.e. `TI(+4)` Highest for Ti
`MnO_(2)` i.e `Mn(+4)`
`MnO_(3)` i.e. Mn(+6)


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