Calcium chloride (CaCl₂) is an ionic compound. This means that the bond holding the atoms together is an ionic bond.

Here's why:

* Calcium (Ca) is a metal and tends to lose two electrons to become a positively charged ion (Ca²⁺).

* Chlorine (Cl) is a nonmetal and tends to gain one electron to become a negatively charged ion (Cl⁻).

The strong electrostatic attraction between the positively charged calcium ion and the negatively charged chloride ions forms the ionic bond in calcium chloride.