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

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I and II

II and III

I and III

II and II

answer is C.

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Detailed Solution

Formula of Copper pyrite is CuFeS₂.
It is a principal ore of copper.
In this, Cu is in +1 oxidation state
Fe is in +3 oxidation state.
Its structure is tetragonal.

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