1. Identify the elements and their atomic masses:
* Copper (Cu): Atomic mass = 63.55 amu
* Fluorine (F): Atomic mass = 19.00 amu
2. Determine the number of atoms of each element in the formula:
* Copper (Cu): 1 atom
* Fluorine (F): 2 atoms
3. Calculate the total mass:
* (1 Cu atom * 63.55 amu/Cu atom) + (2 F atoms * 19.00 amu/F atom) = 101.55 amu
Therefore, the formula mass of copper(II) fluoride (CuF₂) is 101.55 amu.
