The pair of compounds in which both the metals are in the highest possible oxidation state is:
Answer & explanation
Correct answer: option 2
The correct answer is (2) \(CrO_2Cl_2, MnO_4^–\)
The highest oxidation state of Cr is +6, and the highest oxidation state of Mn is +7. In \(CrO_2Cl_2\), the oxidation state of Cr is +6, and in\(MnO_4^–\), the oxidation state of Mn is +7. Therefore, both metals are in their highest possible oxidation state in this pair of compounds.
The other pairs of compounds do not have both metals in their highest possible oxidation state.
- In \([Co(CN)_6]^{3–}\), the oxidation state of Co is +3, and in \(MnO_2\), the oxidation state of Mn is +4.
- In \(TiO_3\), the oxidation state of Ti is +4, and in \(MnO_2\), the oxidation state of Mn is +4.
- In \([Fe(N_)6]^{3–}\), the oxidation state of Fe is +3, and in \([Co(CN)_6]^{3–}\), the oxidation state of Co is +3.