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I would hope that "chromium" is obvious. Slightly less obvious is that "oxide" refers to the presence of oxygen.

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13y ago
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13y ago

iron and oxygen.

the reaction is -

Fe+O2 = Fe2O3(normally) , Fe3O4(under special cases)

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Q: What 2 elements composes iron oxide?
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Related questions

Why Rust is compound?

A compound is 2 or more elements permanently combined. Rust is a combination of iron and oxygen, both elements- into iron oxide, a compound.


What 2 substances contain iron?

No elements are made up of a compound. I think you mean 'Which elements make up iron oxide?', and the answer to that is iron and oxygen.


What 2 elements make up rust?

Iron and oxygen


What 2 elements composes carbon dioxide?

carbon and oxygen


What is the word equation for iron oxygen?

iron oxide


What are the differences between iron metal and compounds containing iron?

Iron is a chemical element; iron compounds contain in the molecule iron but also other elements.


What is the oxidation number of iron(II) oxide?

I am going to assume you meant ferrous oxide. Ferrous oxide is also known as Iron(II) oxide and has the formula unit FeO. The oxidation number of iron in iron(II) oxide is +2.


What is the chemical formula of iron II III oxide?

Iron(II) oxide is Fe(OH)2 Iron(III) oxide is Fe(OH)3


Where can you buy small amounts of ferous oxide?

Iron(II) oxide, also known as ferrous oxide or informally as iron monoxide, is one of the iron oxides. It is a black-colored powder with the chemical formula FeO. It consists of the chemical element iron in the oxidation state of 2 bonded to oxygen. Its mineral form is known aswüstite. Iron(II) oxide should not be confused with rust, which usually consists of hydrated iron(III) oxide (ferric oxide). The term may be used more loosely for a non-stoichiometric compound as the ratio of the elements iron and oxygen can vary; samples are typically iron deficient with compositions ranging from Fe0.84O to Fe0.95O.[2]


What is Iron 2 Oxide?

The formula for iron (II) oxide is FeO. It is a black colored powder, not rust.


What is the oxidation number of iron in ferrousofericoxide?

I am going to assume you meant ferrous oxide. Ferrous oxide is also known as Iron(II) oxide and has the formula unit FeO. The oxidation number of iron in iron(II) oxide is +2.


Why some elements have variable valencies?

Certain elements combine with other atoms, donating, accepting or sharing electrons in different proportions depending on the nature of the reaction. For example, iron combines with oxygen to form ferrous oxide as well as ferric oxide. In the formation of ferrous oxide, iron exhibits a valency of +2, whereas in ferric oxide, it has a valency of +3. This is termed variable valency