Final answer:
The formula for calcium chloride is CaCl₂, resulting from the pairing of a Ca²+ ion with two Cl⁻ ions, with stability due to the highly exothermic nature of its formation.
Step-by-step explanation:
The formula for calcium chloride is CaCl₂.
When considering the typical behavior of a non-transition metal like calcium, we see that in calcium chloride, calcium takes on a 2+ charge (Ca²+) to balance the charge from two chloride (Cl⁻) ions.
Each Ca²+ ion pairs with two Cl⁻ ions to create the formula CaCl₂, as this combination is highly exothermic and thus more stable. The calculation of the percentage mass of each element in calcium chloride involves using atomic weights and the formula's molar mass as a reference.
Complete Question : what are likely formulas for the following molecules?calcium chloride.