So you don't have to state the number of cations and anions, You simply should state what They can be (and what their demand is). You then figure the formula based on the bottom whole number ratio of cations to anions that generates a neutral formula. Some analyses begin with https://potassium-cyanide-solutio34432.blog2freedom.com/30410843/everything-about-potassium-cyanide-oppenheimer-reddit