Calcium fluoride consists of the elements calcium (Ca) and fluorine (F). In the molecule of calcium fluoride, there is one calcium atom and two fluorine atoms. The calcium atom is located at the centre while the two fluorine atoms each form chemical bonds with the calcium atom.

Relative atomic mass is the value obtained by comparing the atomic mass of an element with 1/12 of the atomic mass of carbon-12. According to the International Union of Pure and Applied Chemistry (IUPAC), the relative atomic mass of calcium is 40.08, while that of fluorine is 19.00.

Molar mass is the mass of one mole of a substance in grams per mole (g/mol). To calculate the molar mass of calcium fluoride, we simply add the relative atomic masses of the elements that make it up.
For calcium fluoride (CaF₂), the molar mass is calculated as follows:
Molar mass (CaF₂) = Relative atomic mass (Ca) + 2 × Relative atomic mass (F)
= 40.08 + 2 × 19.00
= 78.08 g/mol
Hence, the molar mass of calcium fluoride is 78.08 g/mol.

Molar mass is a very important concept in chemistry. It not only helps us to understand the composition of compounds, but is also the basis for performing calculations for chemical reactions. Knowing the molar mass of calcium fluoride makes it easier for us to calculate the change in its mass during a chemical reaction and thus gain a deeper understanding of the chemical properties and applications of calcium fluoride.

In summary, the molar mass of calcium fluoride(Caf2 Lens )is 78.08 g/mol, a value derived by adding and summing the relative atomic masses of the constituent elements. Knowing the molar mass of calcium fluoride helps us to better understand its chemical properties and applications.