Here's how we arrive at that:
* Calcium is a metal with a +2 charge (Ca²⁺).
* Chlorine is a nonmetal with a -1 charge (Cl⁻).
* To form a neutral compound, we need two chloride ions for every calcium ion.
* The chemical formula is CaCl₂.
When naming ionic compounds, the metal comes first, followed by the nonmetal with the suffix "-ide".
