The primary chemical formula for ferrous fluoride is FeF₂.
Understanding Ferrous Fluoride
Ferrous fluoride, also known as Iron(II) fluoride, is an inorganic compound. Its molecular structure indicates that it is formed from iron in its +2 oxidation state and fluorine.
Anhydrous Ferrous Fluoride (FeF₂)
The most straightforward representation of ferrous fluoride in its anhydrous (water-free) form is FeF₂. This formula signifies that each molecule of the compound contains one iron atom and two fluorine atoms. In its pure anhydrous state, ferrous fluoride is a white crystalline solid.
Hydrated Ferrous Fluoride (FeF₂·4H₂O)
Ferrous fluoride can also exist as a tetrahydrate, meaning it has four water molecules associated with each molecule of FeF₂. The formula for this hydrated form is FeF₂·4H₂O. This tetrahydrate is also a white crystalline solid and is commonly referred to by the same names as the anhydrous form: ferrous fluoride or Iron(II) fluoride.
Chemical Composition Breakdown
The formula FeF₂ reflects the valencies of the elements involved. Iron, in its ferrous state, carries a +2 charge (Fe²⁺), while fluorine typically carries a -1 charge (F⁻). To achieve electrical neutrality, two fluoride ions are required to balance one iron(II) ion.
| Element | Chemical Symbol | Ionic State (Valency) | Quantity in FeF₂ |
|---|---|---|---|
| Iron | Fe | Fe²⁺ (+2) | 1 |
| Fluorine | F | F⁻ (-1) | 2 |
For more general information on chemical formulas and compounds, resources like Wikipedia's entry on Chemical Formulas can provide additional context.
