Potassium chloride, which is shown as KCl, is an ionic solid. It is in the form of a white color, odorless crystal. Potassium is a group 1 metal; thus forms a +1 charged cation. Its electron configuration is 1s2 2s2 2p6 3s2 3p6 4s1. It can release one electron, which is in 4s sub orbital and produce a +1 cation.