The correct formula unit for the ionic compound zinc iodide is ZnI2. In zinc iodide, zinc (Zn) has a +2 charge, and iodide (I) has a -1 charge. To balance the charges, you need two iodide ions for each zinc ion, resulting in the formula ZnI2.
What is the correct formula unit for the ionic compound, zinc iodide?
? ZnI
? Zn2I
? ZnI2
? ZrI2
? Zn2I3
1 answer