Configuration électronique par élément chimique
# Configuration électronique par élément chimique

Cette page compile les configurations électroniques des éléments chimiques jusqu'au $_{104}Rf.$

## Configuration électronique des éléments chimiques

Configuration électronique des atomes neutres à l'état fondamental : par sous-couches abrégées, par sous-couches détaillées et par nombre d'électrons dans chaque couche

1 H Hydrogène : $1s^1$ :

| $1s^1$ | | | | | | | | | | | | | | | | | | |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | | | | | | | | | | | | | | | | | | |
| 2 He Hélium : $1s^2$ |||||||||||||||||||
| $1s^2$ | | | | | | | | | | | | | | | | | | |
| 2 | | | | | | | | | | | | | | | | | | |
| 3 Li Lithium : $1s^2$ $2s^1$ |||||||||||||||||||
| $1s^2$ | $2s^1$ | | | | | | | | | | | | | | | | | |
| 2 | 1 | 1 | | | | | | | | | | | | | | | | |
| 4 Be Béryllium : $1s^2$ $2s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | | | | | | | | | | | | | | | | | |
| 2 | 2 | 2 | | | | | | | | | | | | | | | | |
| 5 B Bore : $1s^2$ $2s^2$ $2p^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^1$ | | | | | | | | | | | | | | | | |
| 2 | 3 | 3 | | | | | | | | | | | | | | | | |
| 6 C Carbone : $1s^2$ $2s^2$ $2p^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^2$ | | | | | | | | | | | | | | | | |
| 2 | 4 | 4 | | | | | | | | | | | | | | | | |
| 7 N Azote : $1s^2$ $2s^2$ $2p^3$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^3$ | | | | | | | | | | | | | | | | |
| 2 | 5 | 5 | | | | | | | | | | | | | | | | |
| 8 O Oxygène : $1s^2$ $2s^2$ $2p^4$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^4$ | | | | | | | | | | | | | | | | |
| 2 | 6 | 6 | | | | | | | | | | | | | | | | |
| 9 F Fluor : $1s^2$ $2s^2$ $2p^5$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^5$ | | | | | | | | | | | | | | | | |
| 2 | 7 | 7 | | | | | | | | | | | | | | | | |
| 10 Ne Néon : $1s^2$ $2s^2$ $2p^6$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | | | | | | | | | | | | | | | | |
| 2 | 8 | 8 | | | | | | | | | | | | | | | | |
| 11 Na Sodium : [Ne] $3s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^1$ | | | | | | | | | | | | | | | |
| 2 | 8 | 8 | 1 | 1 | 1 | | | | | | | | | | | | | |
| 12 Mg Magnésium : [Ne] $3s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | | | | | | | | | | | | | | | |
| 2 | 8 | 8 | 2 | 2 | 2 | | | | | | | | | | | | | |
| 13 Al Aluminium : [Ne] $3s^2$ $3p^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^1$ | | | | | | | | | | | | | | |
| 2 | 8 | 8 | 3 | 3 | 3 | | | | | | | | | | | | | |
| 14 Si Silicium : [Ne] $3s^2$ $3p^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^2$ | | | | | | | | | | | | | | |
| 2 | 8 | 8 | 4 | 4 | 4 | | | | | | | | | | | | | |
| 15 P Phosphore : [Ne] $3s^2$ $3p^3$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^3$ | | | | | | | | | | | | | | |
| 2 | 8 | 8 | 5 | 5 | 5 | | | | | | | | | | | | | |
| 16 S Soufre : [Ne] $3s^2$ $3p^4$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^4$ | | | | | | | | | | | | | | |
| 2 | 8 | 8 | 6 | 6 | 6 | | | | | | | | | | | | | |
| 17 Cl Chlore : [Ne] $3s^2$ $3p^5$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^5$ | | | | | | | | | | | | | | |
| 2 | 8 | 8 | 7 | 7 | 7 | | | | | | | | | | | | | |
| 18 Ar Argon : [Ne] $3s^2$ $3p^6$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | | | | | | | | | | | | | | |
| 2 | 8 | 8 | 8 | 8 | 8 | | | | | | | | | | | | | |
| 19 K Potassium : [Ar] $4s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | | $4s^1$ | | | | | | | | | | | | |
| 2 | 8 | 8 | 8 | 8 | 8 | 1 | 1 | 1 | 1 | | | | | | | | | |
| 20 Ca Calcium : [Ar] $4s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | | $4s^2$ | | | | | | | | | | | | |
| 2 | 8 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | 2 | | | | | | | | | |
| 21 Sc Scandium : [Ar] $3d^1$ $4s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^1$ | $4s^2$ | | | | | | | | | | | | |
| 2 | 8 | 8 | 9 | 9 | 9 | 2 | 2 | 2 | 2 | | | | | | | | | |
| 22 Ti Titane : [Ar] $3d^2$ $4s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^2$ | $4s^2$ | | | | | | | | | | | | |
| 2 | 8 | 8 | 10 | 10 | 10 | 2 | 2 | 2 | 2 | | | | | | | | | |
| 23 V Vanadium : [Ar] $3d^3$ $4s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^3$ | $4s^2$ | | | | | | | | | | | | |
| 2 | 8 | 8 | 11 | 11 | 11 | 2 | 2 | 2 | 2 | | | | | | | | | |
| 24 Cr Chrome : [Ar] $3d^5$ $4s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^5$ | $4s^1$ | | | | | | | | | | | | |
| 2 | 8 | 8 | 13 | 13 | 13 | 1 | 1 | 1 | 1 | | | | | | | | | |
| 25 Mn Manganèse : [Ar] $3d^5$ $4s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^5$ | $4s^2$ | | | | | | | | | | | | |
| 2 | 8 | 8 | 13 | 13 | 13 | 2 | 2 | 2 | 2 | | | | | | | | | |
| 26 Fe Fer : [Ar] $3d^6$ $4s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^6$ | $4s^2$ | | | | | | | | | | | | |
| 2 | 8 | 8 | 14 | 14 | 14 | 2 | 2 | 2 | 2 | | | | | | | | | |
| 27 Co Cobalt : [Ar] $3d^7$ $4s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^7$ | $4s^2$ | | | | | | | | | | | | |
| 2 | 8 | 8 | 15 | 15 | 15 | 2 | 2 | 2 | 2 | | | | | | | | | |
| 28 Ni Nickel : [Ar] $3d^8$ $4s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^8$ | $4s^2$ | | | | | | | | | | | |
| 2 | 8 | 8 | 16 | 16 | 16 | 2 | 2 | 2 | 2 | | | | | | | | | |
| 29 Cu Cuivre : [Ar] $3d^{10}$ $4s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^1$ | | | | | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 1 | 1 | 1 | 1 | | | | | | | | | |
| 30 Zn Zinc : [Ar] $3d^{10}$ $4s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | | | | | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 2 | 2 | 2 | 2 | | | | | | | | | |
| 31 Ga Gallium : [Ar] $3d^{10}$ $4s^2$ $4p^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^1$ | | | | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 3 | 3 | 3 | 3 | | | | | | | | | |
| 32 Ge Germanium : [Ar] $3d^{10}$ $4s^2$ $4p^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^2$ | | | | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 4 | 4 | 4 | 4 | | | | | | | | | |
| 33 As Arsenic : [Ar] $3d^{10}$ $4s^2$ $4p^3$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^3$ | | | | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 5 | 5 | 5 | 5 | | | | | | | | | |
| 34 Se Sélénium : [Ar] $3d^{10}$ $4s^2$ $4p^4$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^4$ | | | | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 6 | 6 | 6 | 6 | | | | | | | | | |
| 35 Br Brome : [Ar] $3d^{10}$ $4s^2$ $4p^5$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^5$ | | | | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 7 | 7 | 7 | 7 | | | | | | | | | |
| 36 Kr Krypton : [Ar] $4s^2$ $3d^{10}$ $4p^6$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | | | | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 8 | 8 | 8 | 8 | | | | | | | | | |
| 37 Rb Rubidium : [Kr] $5s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | | | $5s^1$ | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 8 | 8 | 8 | 8 | 1 | 1 | 1 | 1 | | | | | |
| 38 Sr Strontium : [Kr] $5s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | | | $5s^2$ | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | 2 | | | | | |
| 39 Y Yttrium : [Kr] $4d^1$ $5s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^1$ | | $5s^2$ | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 9 | 9 | 9 | 9 | 2 | 2 | 2 | 2 | | | | | |
| 40 Zr Zirconium : [Kr] $4d^2$ $5s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^2$ | | $5s^2$ | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 10 | 10 | 10 | 10 | 2 | 2 | 2 | 2 | | | | | |
| 41 Nb Niobium : [Kr] $4d^4$ $5s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^4$ | | $5s^1$ | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 12 | 12 | 12 | 12 | 1 | 1 | 1 | 1 | | | | | |
| 42 Mo Molybdène : [Kr] $4d^5$ $5s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^5$ | | $5s^1$ | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 13 | 13 | 13 | 13 | 1 | 1 | 1 | 1 | | | | | |
| 43 Tc Technétium : [Kr] $4d^5$ $5s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^5$ | | $5s^2$ | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 13 | 13 | 13 | 13 | 2 | 2 | 2 | 2 | | | | | |
| 44 Ru Ruthénium : [Kr] $4d^7$ $5s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^7$ | | $5s^1$ | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 15 | 15 | 15 | 15 | 1 | 1 | 1 | 1 | | | | | |
| 45 Rh Rhodium : [Kr] $4d^8$ $5s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^8$ | | $5s^1$ | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 16 | 16 | 16 | 16 | 1 | 1 | 1 | 1 | | | | | |
| 46 Pd Palladium : [Kr] $4d^{10}$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | | | | | | | | | |
| 47 Ag Argent : [Kr] $4d^{10}$ $5s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | $5s^1$ | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 1 | 1 | 1 | 1 | | | | | |
| 48 Cd Cadmium : [Kr] $4d^{10}$ $5s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | $5s^2$ | | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 2 | 2 | 2 | 2 | | | | | |
| 49 In Indium : [Kr] $4d^{10}$ $5s^2$ $5p^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | $5s^2$ | $5p^1$ | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 3 | 3 | 3 | 3 | | | | | |
| 50 Sn Étain : [Kr] $4d^{10}$ $5s^2$ $5p^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | $5s^2$ | $5p^2$ | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 4 | 4 | 4 | 4 | | | | | |
| 51 Sb Antimoine : [Kr] $4d^{10}$ $5s^2$ $5p^3$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | $5s^2$ | $5p^3$ | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 5 | 5 | 5 | 5 | | | | | |
| 52 Te Tellure : [Kr] $4d^{10}$ $5s^2$ $5p^4$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | $5s^2$ | $5p^4$ | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 6 | 6 | 6 | 6 | | | | | |
| 53 I Iode : [Kr] $4d^{10}$ $5s^2$ $5p^5$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | $5s^2$ | $5p^5$ | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 7 | 7 | 7 | 7 | | | | | |
| 54 Xe Xénon : [Kr] $4d^{10}$ $5s^2$ $5p^6$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | $5s^2$ | $5p^6$ | | | | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 8 | 8 | 8 | 8 | | | | | |
| 55 Cs Césium : [Xe] $6s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | $5s^2$ | $5p^6$ | | | $6s^1$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 8 | 8 | 8 | 8 | 1 | 1 | 1 | | |
| 56 Ba Baryum : [Xe] $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 57 La Lanthane : [Xe] $5d^1$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | | $5s^2$ | $5p^6$ | $5d^1$ | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 9 | 9 | 9 | 9 | 2 | 2 | 2 | | |
| 58 Ce Cérium : [Xe] $4f^1$ $5d^1$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^1$ | $5s^2$ | $5p^6$ | $5d^1$ | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 9 | 9 | 9 | 9 | 2 | 2 | 2 | | |
| 59 Pr Praséodyme : [Xe] $4f^3$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^3$ | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 21 | 21 | 21 | 21 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 60 Nd Néodyme : [Xe] $4f^4$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^4$ | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 22 | 22 | 22 | 22 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 61 Pm Prométhium : [Xe] $4f^5$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^5$ | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 23 | 23 | 23 | 23 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 62 Sm Samarium : [Xe] $4f^6$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^6$ | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 24 | 24 | 24 | 24 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 63 Eu Europium : [Xe] $4f^7$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^7$ | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 25 | 25 | 25 | 25 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 64 Gd Gadolinium : [Xe] $4f^7$ $5d^1$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^7$ | $5s^2$ | $5p^6$ | $5d^1$ | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 25 | 25 | 25 | 25 | 9 | 9 | 9 | 9 | 2 | 2 | 2 | | |
| 65 Tb Terbium : [Xe] $4f^9$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^9$ | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 27 | 27 | 27 | 27 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 66 Dy Dysprosium : [Xe] $4f^{10}$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{10}$ | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 28 | 28 | 28 | 28 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 67 Ho Holmium : [Xe] $4f^{11}$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{11}$ | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 29 | 29 | 29 | 29 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 68 Er Erbium : [Xe] $4f^{12}$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{12}$ | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 30 | 30 | 30 | 30 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 69 Tm Thulium : [Xe] $4f^{13}$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{13}$ | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 31 | 31 | 31 | 31 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 70 Yb Ytterbium : [Xe] $4f^{14}$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | | |
| 71 Lu Lutécium : [Xe] $4f^{14}$ $5d^1$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^1$ | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 9 | 9 | 9 | 9 | 2 | 2 | 2 | | |
| 72 Hf Hafnium : [Xe] $4f^{14}$ $5d^2$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^2$ | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 10 | 10 | 10 | 10 | 2 | 2 | 2 | | |
| 73 Ta Tantale : [Xe] $4f^{14}$ $5d^3$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^3$ | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 11 | 11 | 11 | 11 | 2 | 2 | 2 | | |
| 74 W Tungstène : [Xe] $4f^{14}$ $5d^4$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^4$ | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 12 | 12 | 12 | 12 | 2 | 2 | 2 | | |
| 75 Re Rhénium : [Xe] $4f^{14}$ $5d^5$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^5$ | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 13 | 13 | 13 | 13 | 2 | 2 | 2 | | |
| 76 Os Osmium : [Xe] $4f^{14}$ $5d^6$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^6$ | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 14 | 14 | 14 | 14 | 2 | 2 | 2 | | |
| 77 Ir Iridium : [Xe] $4f^{14}$ $5d^7$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^7$ | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 15 | 15 | 15 | 15 | 2 | 2 | 2 | | |
| 78 Pt Platine : [Xe] $4f^{14}$ $5d^9$ $6s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^9$ | | $6s^1$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 17 | 17 | 17 | 17 | 1 | 1 | 1 | | |
| 79 Au Or : [Xe] $4f^{14}$ $5d^{10}$ $6s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^1$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 1 | 1 | 1 | | |
| 80 Hg Mercure : [Xe] $4f^{14}$ $5d^{10}$ $6s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^2$ | | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 2 | 2 | 2 | | |
| 81 Tl Thallium : [Xe] $4f^{14}$ $5d^{10}$ $6s^2$ $6p^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^2$ | $6p^1$ | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 3 | 3 | 3 | | |
| 82 Pb Plomb : [Xe] $4f^{14}$ $5d^{10}$ $6s^2$ $6p^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^2$ | $6p^2$ | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 4 | 4 | 4 | | |
| 83 Bi Bismuth : [Xe] $4f^{14}$ $5d^{10}$ $6s^2$ $6p^3$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^2$ | $6p^3$ | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 5 | 5 | 5 | | |
| 84 Po Polonium : [Xe] $4f^{14}$ $5d^{10}$ $6s^2$ $6p^4$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^2$ | $6p^4$ | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 6 | 6 | 6 | | |
| 85 At Astate : [Xe] $4f^{14}$ $5d^{10}$ $6s^2$ $6p^5$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^2$ | $6p^5$ | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 7 | 7 | 7 | | |
| 86 Rn Radon : [Xe] $4f^{14}$ $5d^{10}$ $6s^2$ $6p^6$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^2$ | $6p^6$ | | | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 8 | 8 | 8 | | |
| 87 Fr Francium : [Rn] $7s^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^2$ | $6p^6$ | | $7s^1$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 8 | 8 | 8 | 1 | 1 |
| 88 Ra Radium : [Rn] $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^2$ | $6p^6$ | | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 8 | 8 | 8 | 2 | 2 |
| 89 Ac Actinium : [Rn] $6d^1$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^2$ | $6p^6$ | $6d^1$ | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 9 | 9 | 9 | 2 | 2 |
| 90 Th Thorium : [Rn] $6d^2$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | | $6s^2$ | $6p^6$ | $6d^2$ | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 18 | 18 | 18 | 18 | 10 | 10 | 10 | 2 | 2 |
| 91 Pa Protactinium : [Rn] $5f^2$ $6d^1$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^2$ | $6s^2$ | $6p^6$ | $6d^1$ | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 20 | 20 | 20 | 20 | 9 | 9 | 9 | 2 | 2 |
| 92 U Uranium : [Rn] $5f^3$ $6d^1$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^3$ | $6s^2$ | $6p^6$ | $6d^1$ | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 21 | 21 | 21 | 21 | 9 | 9 | 9 | 2 | 2 |
| 93 Np Neptunium : [Rn] $5f^4$ $6d^1$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^4$ | $6s^2$ | $6p^6$ | $6d^1$ | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 22 | 22 | 22 | 22 | 9 | 9 | 9 | 2 | 2 |
| 94 Pu Plutonium : [Rn] $5f^6$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^6$ | $6s^2$ | $6p^6$ | | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 24 | 24 | 24 | 24 | 8 | 8 | 8 | 2 | 2 |
| 95 Am Américium : [Rn] $5f^7$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^7$ | $6s^2$ | $6p^6$ | | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 25 | 25 | 25 | 25 | 8 | 8 | 8 | 2 | 2 |
| 96 Cm Curium : [Rn] $5f^7$ $6d^1$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^7$ | $6s^2$ | $6p^6$ | $6d^1$ | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 25 | 25 | 25 | 25 | 9 | 9 | 9 | 2 | 2 |
| 97 Bk Berkelium : [Rn] $5f^9$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^9$ | $6s^2$ | $6p^6$ | | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 27 | 27 | 27 | 27 | 8 | 8 | 8 | 2 | 2 |
| 98 Cf Californium : [Rn] $5f^{10}$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^{10}$ | $6s^2$ | $6p^6$ | | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 28 | 28 | 28 | 28 | 8 | 8 | 8 | 2 | 2 |
| 99 Es Einsteinium : [Rn] $5f^{11}$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^{11}$ | $6s^2$ | $6p^6$ | | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 29 | 29 | 29 | 29 | 8 | 8 | 8 | 2 | 2 |
| 100 Fm Fermium : [Rn] $5f^{12}$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^{12}$ | $6s^2$ | $6p^6$ | | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 30 | 30 | 30 | 30 | 8 | 8 | 8 | 2 | 2 |
| 101 Md Mendelevium : [Rn] $5f^{13}$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^{13}$ | $6s^2$ | $6p^6$ | | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 8 | 8 | 8 | 2 | 2 |
| 102 No Nobelium : [Rn] $5f^{14}$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^{14}$ | $6s^2$ | $6p^6$ | | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 8 | 8 | 8 | 2 | 2 |
| 103 Lr Lawrencium : probablement [Rn] $5f^{14}$ $7s^2$ $7p^1$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^{14}$ | $6s^2$ | $6p^6$ | | $7s^2$ | $7p^1$ |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 8 | 8 | 8 | 3 | 3 |
| 104 Rf Rutherfordium : probablement [Rn] $5f^{14}$ $6d^2$ $7s^2$ |||||||||||||||||||
| $1s^2$ | $2s^2$ | $2p^6$ | $3s^2$ | $3p^6$ | $3d^{10}$ | $4s^2$ | $4p^6$ | $4d^{10}$ | $4f^{14}$ | $5s^2$ | $5p^6$ | $5d^{10}$ | $5f^{14}$ | $6s^2$ | $6p^6$ | $6d^2$ | $7s^2$ | |
| 2 | 8 | 8 | 18 | 18 | 18 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 10 | 10 | 10 | 2 | 2 |
