Electron configurations of the elements (data page)

Electron configurations of elements are like the instructions for how an element is made. It's kind of like a recipe. The recipe tells us how many electrons are in each of the levels around the atom. It tells us where the electrons go and how many there are. They have different names too, so we can tell which is which. The numbers next to each one tell us how many electrons are in each level. That way, we know what all the elements are made of and how they work.