HOLY Angelina JOLIE! Look at that diagram! That is how we write the electron configuration of any element. You write then how the arrows go down. So you start with 1s then 2s then 2p then 3s then 3p then 4s and so on. Remember this: the maximum amount of electrons in each shell are 2 for s, 6 for p, 10 for d, and 14 for f.