We now know that atoms are made up of a nucleus and a shell. In the stations of this building block, you can learn more about the atomic shell and its structure step by step.

At this point, you have the option of choosing from two different paths. Building blocks 7.1 and 7.2 deal with different phenomena that lead you to the structure of the atomic shell, while building block 7.3, which explains the structure of the atomic shell, comes at the end. You can choose one of the two modules to work on or work on both in succession.