Iron burns in air to from

Options

A. `FeO`
B. `Fe_(2)O_(3)`
C. `Fe_(3)O_(4)`
D. `FeO_(2)`

Answer

**Step-by-Step Solution:**

1. **Identify the Reactants:**
- When iron (Fe) burns, it reacts with oxygen (O2) present in the air.

2. **Write the Chemical Reaction:**
- The burning of iron in oxygen can be represented by the following chemical equation:
\[ 4Fe + 3O_2 \rightarrow 2Fe_2O_3 \]
- This equation shows that four moles of iron react with three moles of oxygen to produce two moles of iron(III) oxide.

3. **Identify the Product:**
- The product formed when iron burns in air is iron(III) oxide, which has the chemical formula Fe2O3.

4. **Conclusion:**
- Therefore, when iron burns in air, it forms iron(III) oxide (Fe2O3).

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