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Question

In chromite ore, the oxidation number of iron and chromium are respectively

A
+3, +2
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B
+3, +2
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C
+2, +6
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D
+2, +3.
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Solution

The correct option is D +2, +3.

Chromite ore is FeCr2O4 or FeO.Cr2O3. Oxidation state of Fe = +2, Cr= +3.


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