]Aluminum ions form an ionic bond with chromate ions, and the resultant formula is Al2(CrO4)3. What is the ion charge for the chromate ion?

Respuesta :

2-. Aluminium has a charge of 3+, which is why there are 3 chromate ions, and chromate has a charge of 2-, so there are 2 aluminium ions: you swap the charges of each ion to be the subscript for the other ion. Hope this helped :)