So each guy has ten electrons, and that means each guy have each flooring has a has achieved electron configuration of a noble gas. Now, this is the same thing as writing this guy. Now, this is even a more shortcut method, because now we don't have to add these electrons on the outside. We kind of assume that they are there, but we don't draw them. What we do draw is this line here. This line simply means that there is an equal sharing of electrons.