Electronic Configurations of the Elements
| 1s | 2s | 2p | |
| H | 1 | ||
| He | 2 | ||
| Li | 2 | 1 | |
| Be | 2 | 2 | |
| B | 2 | 2 | 1 |
| C | 2 | 2 | 2 |
| N | 2 | 2 | 3 |
| O | 2 | 2 | 4 |
| F | 2 | 2 | 5 |
| Ne | 2 | 2 | 6 |
| 1s | 2s | 2p | 3s | 3p | |
| Na | 2 | 2 | 6 | 1 | |
| Mg | 2 | 2 | 6 | 2 | |
| Al | 2 | 2 | 6 | 2 | 1 |
| Si | 2 | 2 | 6 | 2 | 2 |
| P | 2 | 2 | 6 | 2 | 3 |
| S | 2 | 2 | 6 | 2 | 4 |
| Cl | 2 | 2 | 6 | 2 | 5 |
| Ar | 2 | 2 | 6 | 2 | 6 |
| 1s | 2s | 2p | 3s | 3p | 4s | 3d | 4p | |
| K | 2 | 2 | 6 | 2 | 6 | 1 | ||
| Ca | 2 | 2 | 6 | 2 | 6 | 2 | ||
| Sc | 2 | 2 | 6 | 2 | 6 | 2 | 1 | |
| Ti | 2 | 2 | 6 | 2 | 6 | 2 | 2 | |
| V | 2 | 2 | 6 | 2 | 6 | 2 | 3 | |
| Cr | 2 | 2 | 6 | 2 | 6 | 1 | 5 | |
| Mn | 2 | 2 | 6 | 2 | 6 | 2 | 5 | |
| Fe | 2 | 2 | 6 | 2 | 6 | 2 | 6 | |
| Co | 2 | 2 | 6 | 2 | 6 | 2 | 7 | |
| Ni | 2 | 2 | 6 | 2 | 6 | 2 | 8 | |
| Cu | 2 | 2 | 6 | 2 | 6 | 1 | 10 | |
| Zn | 2 | 2 | 6 | 2 | 6 | 2 | 10 | |
| Ga | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 1 |
| Ge | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 2 |
| As | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 3 |
| Se | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 4 |
| Br | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 5 |
| Kr | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 |
| 1s | 2s | 2p | 3s | 3p | 4s | 3d | 4p | 5s | 4d | 5p | |
| Rb | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 1 | ||
| Sr | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | ||
| Y | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 1 | |
| Zr | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 2 | |
| Nb | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 1 | 4 | |
| Mo | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 1 | 5 | |
| Tc | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 5 | |
| Ru | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 1 | 7 | |
| Rh | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 1 | 8 | |
| Pd | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 10 | ||
| Ag | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 1 | 10 | |
| Cd | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | |
| In | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 1 |
| Sn | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 2 |
| Sb | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 3 |
| Te | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 4 |
| I | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 5 |
| Xe | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 |
| 1s | 2s | 2p | 3s | 3p | 4s | 3d | 4p | 5s | 4d | 5p | 6s | 4f | 5d | 6p | |
| Cs | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 1 | |||
| Ba | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | |||
| La | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 1 | ||
| Ce | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 1 | 1 | |
| Pr | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 3 | ||
| Nd | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 4 | ||
| Pm | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 5 | ||
| Sm | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 6 | ||
| Eu | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 7 | ||
| Gd | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 7 | 1 | |
| Tb | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 9 | ||
| Dy | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 10 | ||
| Ho | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 11 | ||
| Er | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 12 | ||
| Tm | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 13 | ||
| Yb | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | ||
| Lu | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 1 | |
| Hf | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 2 | |
| Ta | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 3 | |
| W | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 4 | |
| Re | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 5 | |
| Os | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 6 | |
| Ir | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 7 | |
| Pt | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 1 | 14 | 9 | |
| Au | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 1 | 14 | 10 | |
| Hg | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | |
| Tl | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 1 |
| Pb | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 2 |
| Bi | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 3 |
| Po | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 4 |
| At | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 5 |
| Rn | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 |
| 1s | 2s | 2p | 3s | 3p | 4s | 3d | 4p | 5s | 4d | 5p | 6s | 4f | 5d | 6p | 7s | 5f | 6d | |
| Fr | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 1 | ||
| Ra | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | ||
| Ac | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 1 | |
| Th | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 2 | |
| Pa | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 2 | 1 |
| U | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 3 | 1 |
| Np | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 4 | 1 |
| Pu | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 6 | |
| Am | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 7 | |
| Cm | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 7 | 1 |
| Bk | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 9 | |
| Cf | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 10 | |
| Es | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 11 | |
| Fm | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 12 | |
| Md | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 13 | |
| No | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 14 | |
| Lw | 2 | 2 | 6 | 2 | 6 | 2 | 10 | 6 | 2 | 10 | 6 | 2 | 14 | 10 | 6 | 2 | 14 | 1 |
| 1s | 2s | 2p | 3s | 3p | 4s | 3d | 4p | 5s | 4d | 5p | 6s | 4f | 5d | 6p | 7s | 5f | 6d |
