Answer:
ionic compound
Step-by-step explanation:
When two ions come together to form a compound, they form an ionic compound. Ionic compounds are made up of positively charged ions (cations) and negatively charged ions (anions) that are held together by electrostatic attraction.
For example, sodium chloride (NaCl) is an ionic compound formed when a sodium ion (Na+) and a chloride ion (Cl-) come together. The sodium ion loses an electron to become a positively charged ion, while the chloride ion gains an electron to become a negatively charged ion. The oppositely charged ions attract each other, forming a crystal lattice structure.
Other examples of ionic compounds include magnesium oxide (MgO), potassium iodide (KI), and calcium carbonate (CaCO3).