What is the ionic compound formula of ammonium sulfate?

Ammonium Sulfate is an ionic compound formed by two , Ammonium ##NH_4^+## and Sulfate ##SO_4^-##.

In order for these two polyatomic ions to bond the charges must be equal and opposite. Therefore, it will take two +1 ammonium ions to balance the one -2 sulfate ion. This will make the formula for Ammonium Sulfate ##(NH_4)_2SO_4##.

I hope this was helpful. SMARTERTEACHER