On the chemical formula of barium fluoride
Taste the chemical formula of barium fluoride, when studying the properties of barium and fluorine. Barium, a metal element, often shows + 2 valence in compounds. Fluorine is an active non-metallic element, and it is mostly -1 valence in compounds. The chemical formula of

compounds must be based on the principle that the valence algebraic sum is zero. To form barium fluoride, barium ions combine with fluoride ions. Barium ions have a charge of + 2, and fluoride ions have a charge of -1. To achieve charge balance, difluoride ions need to be matched with one barium ion.

From this perspective, the chemical formula of barium fluoride is BaF 2. This formula is also concise and clear, showing the atomic ratio relationship between barium and fluorine in compounds. If scholars study the valence of elements and the composition of compounds in detail, such chemical formulas can be easily solved.