The pair of compounds having metals in their highest oxidation state is .

Options

A. `MnO_(2),FeCl_(3)`
B. `[NiCl_(4)]^(2-),[CoCl_(4)]^(-)`
C. `[MnO_(4)]^(-),CrO_(2)Cl_(2)`
D. `[Fe(CN)_(6)]^(3-),[Co(CN)_(3)]`

Answer

C

Explanation

The compounds along with their metals, oxidaton statesare `[MnO_(2)]rarrMn^(4+)," " FeCl_(3)rarrFe^(3+)`
`[NiCl_(4)]^(2-)rarrNi^(2+), " " [CoCl_(4)]^(-)rarrCo^(3+)`
`[MnO_(4)]^(-)rarr Mn^(7+)," " CrO_(2)Cl_(2)rarrCr^(6+),`
`[Fe(CN)_(6)]^(3-)rarr Fe^(3+)," " [Co(CN)_(3)]rarrCo^(3+)`