What is the name of the ionic compound BaCO3?

The ionic compound BaCO₃ is called barium carbonate.

Barium (Ba) is a metal that belongs to the alkaline earth metals group in the periodic table. It readily forms ionic compounds by losing two electrons to form a Ba²⁺ ion. Carbonate (CO₃^2-) is a polyatomic ion made up of one carbon atom and three oxygen atoms, carrying a charge of minus two.

When barium and carbonate combine, they do so in a 1:1 ratio to balance their charges, resulting in the neutral compound barium carbonate. This compound is often found in nature as the mineral witherite and is commonly used in various industrial applications, including glass making and ceramics.