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

Options

A. `McO_(2),FeCl_(3)`
B. `McO_(4)^(-), CrO_(2)Cl_(2)`
C. `MnCl_(2), CrCl_(3)`
D. `[NiCl_(4)]^(2-), [CoCl_(4)]^(-)`

Answer

B

Explanation

`MnO_(4)^(-), CrO_(2)Cl_(2)rarr +7,+6`
`MnO_(2),FeCl_(3) rarr +4, +3`
`MnCl_(2),CrCl_(3) rarr +2, +3`
`[NiCl_(4)]^(2-),[CoCl_(4)]^(-)rarr +2, +3`