Calcium has a charge of +2. The chart lists the charges of different ions. Which are possible equations for an ionic compound with calcium?

Question

i dont understand this its about calcium and has a change of +2 this chart lists the differnts 

 

Answer 1

Your question is not very clear.  Exactly what chart do you refer to? If they are asking for possible forms of ionic compounds made with calcium (2+), then if the anion has a 1- charge, it will take 2 to form the ionic compound, and if the anion has a 2- charge, it will take only 1 to form the ionic compound.  Take for example chloride, with a 1- charge. The formula will be CaCl₂ (2 Cl^- for each Ca²⁺).  Or if the ionic compound is formed between Ca and sulfur (which is 2-), you end up with CaS. If this is not what you are asking, please post the question again, and be more specific as to what you want.