Electron shell diagram for every element up to calcium. Step from one element to the next to watch the shells fill by the 2,8,8 rule, see how the outer shell fixes the group, and add or remove electrons to form ions.
Electron shell diagram for every element up to calcium. Step from one element to the next to watch the shells fill by the 2,8,8 rule, see how the outer shell fixes the group, and add or remove electrons to form ions.