The inorganic compound formed between Calcium Ca and Chlorine Cl is Calcium Chloride CaCl2 . To identify it as ionic, covalent, or metallic, we can look at the elements involved and their properties. Calcium is an alkaline earth metal from Group 2 of the periodic table, while Chlorine is a halogen from Group 17. In general, when a metal reacts with a non-metal, they form an ionic compound. Metals tend to lose electrons and form positively charged ions cations , while non-metals tend to gain electrons and form negatively charged ions anions . In the case of Calcium Chloride, Calcium loses two electrons to form a Ca2+ ion, and each Chlorine atom gains one electron to form a Cl- ion. The electrostatic attraction between these oppositely charged ions results in the formation of an ionic compound.Therefore, Calcium Chloride CaCl2 is an ionic compound.