Well, now we have a case in which the number of electrons is no longer equal to the number of protons. And so we're going to get a charge species called an ion. Now, whenever we're dealing with metals, be it transition metals, alkaline metals or alkaline earth metals, these guys tend to lose electrons because they can hold onto an electrons very tightly. They're not very electronegative. And what that basically means is that they will form ions with positive charges. And these guys are called Cations.