# Is calcium sulfate an ionic or covalent compound?

Calcium sulfate is a compound with the chemical formula of $C a S {O}_{4}$. It is made up of a calcium cation $\left(C {a}^{2 +}\right)$ and a sulfate anion $\left(S {O}_{4}^{2 -}\right)$. When a compound is made up of a metal cation and a polyatomic anion, the compound is considered to be ionic.