What Is a Molecular Formula?

The molecular formula is a chemical composition formula that expresses the molecular composition and relative molecular mass of pure substances (elements, compounds) with element symbols. Some substances are indeed made up of molecules, which are covalently bonded to each other within the molecule, and are bonded to each other by van der Waals force or hydrogen bonding. These substances have a molecular formula. For example, the oxygen molecule is represented by O, and the hydrogen chloride molecule is represented by HCl. The molecular formula not only represents the composition of a substance, but more importantly, it can represent a molecule of a substance and its composition and composition (the number of atomic elements, molecular weight, and weight ratio of each element in the molecule). So the molecular formula has a wider meaning than the simplest one.

Molecular formula

The molecular formula is

Molecular formula and

The molecular formula is a chemical formula that uses element symbols to represent the molecular composition and relative molecular mass of pure substances (elements, compounds). The chemical formula is a formula that represents the composition of matter with element symbols. The chemical formula of a molecular crystal is called a molecular formula.

Chemical formulas include molecular formulas.