Question

The species with an atom in +6 oxidation state is
a) MnO₄⁻
b) Cr(CN)₆³⁻
c) NiF₆²⁻
d) CrO₂Cl₂

Answer 1

Hey user here is ur answer⤵⤵

The species with an atom in +6 oxidation state is option b.

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Answer 2

On MnO4-

Mn + 4('O') = -1

Mn + 4(-2) = -1

Mn = +7

b) On Cr(CN)63-

Cr + 6(CN-) = -3

Cr + 6(-1) = -3

Cr = +3

c) On NiF62-,

Ni + 6(F) = -2

Ni + 6(-1) = -2

Ni = +4

(d) On CrO2Cl2

Cr + 2(O) + 2(Cl) = 0

Cr + 2(-2) + 2(-1) = 0

Cr = +6

Hence, the correct option is 'd'