a neutral ionic compound – ions, by definition, are charged, thanks to their imbalance of protons & electrons. So in order to get a salt you have to have a positive thing(s) (cation) and a negative thing (anion) – but you can mix and match. For example, stick a sodium ion (Na⁺) with a chloride ion (Cl⁻) and you get NaCl, or as you might know it better, table salt. Stick that chloride with potassium (K⁺), and you get potassium chloride (KCl). Stick chloride with calcium (Ca²⁺) and you get calcium chloride (CaCl₂) (note that you need 2 chloride atoms per potassium since potassium has a +2 charge).