1.

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

Answer»

`[FE(CN)_6]^(3-),[CO(CN)_6]^(3-)`
`CrO_2Cl_2,MnO_4^-`
`TiO_2,MnO_2`
`[Co(CN)_6]^(3-),MnO_2`

ANSWER :B


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