* One potassium atom (K)

* One chlorine atom (Cl)

It's important to note that potassium chloride exists as an ionic compound, not as individual molecules. It forms a crystal lattice structure where potassium ions (K+) and chloride ions (Cl-) are arranged in a regular pattern. However, we still use the formula KCl to represent the ratio of potassium to chlorine in this compound.