Ground State Electron Configurations TABLE 1.1 Ground-State Electron Configurations of Some Elements Atomic Atomic Element number Configuration Element number Configuration Hydrogen Lithium 2 9 1s + Carbon 6 Neon 10 s 18 H l HH村 38 8 H Sodium 11 p H H Argon 18 H 1s 1s 2004 Thomson-Brooks/ColeGround State Electron Configurations