Chemistry How to Determine the Oxidation Number of Fe in FeCO3?

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To determine the oxidation number of iron (Fe) in FeCO3, it is essential to recognize that carbonates (CO3) have a charge of -2. Since the compound is neutral overall, the oxidation number of Fe must balance the -2 charge from the carbonate. Therefore, Fe must have an oxidation state of +2, making it iron (II). The confusion arises from the mention of iron (II) nitrate, which is unrelated to the original question about FeCO3. Clear identification of the compound in question is crucial for accurate calculations.
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FeCO3
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I achieved calculating the oxidation number of C and my result is x=5
Hi there,
I did an exercise and when we corrected it I realised that the oxidation number of Fe was (ll) but I don't know how can I find it.
The common name is iron (ll) nitrate and the other name, that I don't know how is called because i study this in basque, is iron (2+) nitrate trioxide (2-)
 
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No, it is not 5.

Plus, you listed FeCO3, but then you referred to the nitrate, so it is quite difficult to help, as in reality we don't know what the problem really is.
 

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