what is the formula of calcium carbonate​

Answer :

Answer:

[tex]CaCO_{3}[/tex]

Explanation:

This is because calcium is a metal that forms ions with a 2+ charge (as it has 2 electrons on its outer shell).

Carbonate ions are complex ions with a 2- charge, so with one carbonate and one calcium, the 2+ and 2- charges will cancel out.