Potassium reacts with Chlorine to produce the ionic solid potassium chloride (KCl). Which elements would you predict would react with Iodine in a similar type of reaction? I know that K has a +1 charge and Cl has a -1 charge. Iodine has a -1 charge and all the elements in column 1A have a +1 charge. I deduced that Cesium has a similar type of reaction when combined with Iodine but are there any other elements that would produce a similar reaction?