By using Stock-notation, the following compounds, FeO,Fe2O3,CuO and MnO2 can be represented as
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a
Fe(II)O,Fe2(III)O3,Cu(II)O,Mn(IV)O2, respectively
b
Fe(III)O,Fe2(II)O3,Cu(IV)O,Mn(I)O2, respectively
c
Fe(II)O,Fe2(IV)O3,Cu(I)O,Mn(III)O2, respectively
d
Fe(I)O,Fe2(I)O3,Cu(III)O,Mn(II)O2, respectively
answer is A.
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Detailed Solution
By using Stock-notation the given compounds can be represented asFeO⟶Fe(II)OFe2O3⟶Fe2(III)O3CuO⟶Cu(II)OMnO2⟶Mn(IV)O2where, II, III, II, IV represent oxidation states of metals, Fe (in FeO), Fe (in Fe2O3), Cu (in CuO) and Mn (in MnO2) respectively.