SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the formula for iron(III) oxide?
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FeO
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Fe3O
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Fe3O2
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Fe2O3
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Explanation:
Detailed explanation-1: -Fe2O3 is the chemical formula of Iron(III) oxide which has three oxygen atoms, and two iron atoms. The oxidation state of Fe2O3 is +3. The bond formation between oxygen and iron depends on the difference in electronegativity between these two atoms. Iron(Fe) is metal whereas oxygen(O2) is non-metal.
Detailed explanation-2: -The chemical formula of rust is Fe2O3.
Detailed explanation-3: -Thus, the percentage composition of iron and oxygen in Fe 2 O 3 is 69 . 92 % and 30 . 07 % respectively.
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