Question

why rust occurs only on iron and what is the chemical formula of iron?​

Answer 1

Answer:

The exposure of iron (or an alloy of iron) to oxygen in the presence of moisture leads to the formation of rust. ... The oxidation state of iron in this compound is +2 and its chemical formula is FeO. Iron(III) oxide or ferric oxide, where the iron atom exhibits an oxidation state of +3.

Explanation:

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Answer 2

Answer:

it is estimated that about one-seventh of all iron production goes to replace the metal lost to corrosion. Rust is apparently a hydrated form of iron(III)oxide. The formula is approximately Fe2O3•32H2O, although the exact amount of water is variable.