Ionic compounds are chemical compounds composed of ions, which are charged particles. The most common ionic compounds are salts, which are compounds composed of positively charged metal ions and negatively charged non-metal ions. Some common ionic compounds include:

- Sodium chloride (NaCl): Sodium chloride is a salt composed of sodium ions (Na+) and chloride ions (Cl-). It is commonly known as table salt and is used as a seasoning and food preservative.

- Potassium chloride (KCl): Potassium chloride is a salt composed of potassium ions (K+) and chloride ions (Cl-). It is commonly used as a fertilizer, a food additive, and in medicine as an electrolyte replacement.

- Calcium chloride (CaCl2): Calcium chloride is a salt composed of calcium ions (Ca2+) and chloride ions (Cl-). It is commonly used as a food additive, a desiccant (a substance that absorbs moisture), and a fertilizer.

- Magnesium chloride (MgCl2): Magnesium chloride is a salt composed of magnesium ions (Mg2+) and chloride ions (Cl-). It is commonly used as a food additive, a fertilizer, and in medicine as an electrolyte replacement.

- Sodium bicarbonate (NaHCO3): Sodium bicarbonate is a salt composed of sodium ions (Na+), bicarbonate ions (HCO3-), and hydrogen ions (H+). It is commonly known as baking soda and is used as a leavening agent in baking, a cleaning agent, and a deodorant.

These are just a few examples of common ionic compounds. There are many other ionic compounds with different combinations of metal and non-metal ions.