Oxidation states of Cu and Fe in ${CuFeS}_{2}$ are respectively :

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I and II

II and II

II and III

I and Ill

answer is C.

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Detailed Solution

Since ${Fe}^{3 +} and {Cu}^{+ 2}$ ions are arranged alternatively in tetragonal structure the oxidation state of copper is +1 while the oxidation state of iron is +3.

Hence, option C is correct.

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