What is the oxidation number of iron in FeO?

To determine the oxidation number of iron in FeO, we need to analyze the compound's composition and the typical oxidation states of its constituent elements. In FeO, iron (Fe) is combined with oxygen (O), which is known to have a common oxidation state of -2.

Breaking Down the Compound

In ionic compounds, the sum of the oxidation numbers of all atoms must equal the overall charge of the compound. Since FeO is neutral, the total oxidation number is 0. We can set up an equation to find the oxidation state of iron:

• Let the oxidation number of iron be represented as x.
• The oxidation number of oxygen is -2.

Setting Up the Equation

Now, we can write the equation based on the oxidation states:

x + (-2) = 0

Solving for Iron's Oxidation Number

To find x, we can rearrange the equation:

x - 2 = 0

x = +2

Conclusion on Iron's Oxidation State

Thus, the oxidation number of iron in FeO is +2. This indicates that iron has lost two electrons in this compound, allowing it to bond with oxygen effectively. Understanding oxidation states is crucial in predicting how elements will react chemically and in forming compounds.

Real-World Application

Iron(II) oxide, or FeO, is not just a theoretical concept; it has practical applications in various fields, including materials science and metallurgy. For example, it can be used in the production of iron and steel, where controlling oxidation states is essential for achieving desired properties in the final products.