CONFIGURATION ÉLECTRONIQUE DES ÉLÉMENTS
1. Période 2. Période
3. Période 4. Période
5. Période 6. Période 7. Période
| 1. Période |
K |
L |
M |
N |
O |
P |
Q |
| Nombre |
Symbole |
Nom |
1s |
2s |
2p |
3s |
3p |
3d |
4s |
4p |
4d |
4f |
5s |
5p |
5d |
5f |
6s |
6p |
6d |
6f |
7s |
7p |
| 1 |
H |
Hydrogène |
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 2 |
He |
Hélium |
2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 6. Période |
K |
L |
M |
N |
O |
P |
Q |
| Nombre |
Symbole |
Nom |
1s |
2s |
2p |
3s |
3p |
3d |
4s |
4p |
4d |
4f |
5s |
5p |
5d |
5f |
6s |
6p |
6d |
6f |
7s |
7p |
| 55 |
Cs |
Césium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
.. |
2 |
6 |
.. |
.. |
1 |
|
|
|
|
|
| 56 |
Ba |
Baryum |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
.. |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 57 |
La |
Lanthane |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
.. |
2 |
6 |
1 |
.. |
2 |
|
|
|
|
|
| 58 |
Ce |
Cérium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
2 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 59 |
Pr |
Praséodyme |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
3 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 60 |
Nd |
Néodyme |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
4 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 61 |
Pm |
Prométhium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
5 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 62 |
Sm |
Samarium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
6 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 63 |
Eu |
Europium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
7 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 64 |
Gd |
Gadolinium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
7 |
2 |
6 |
1 |
.. |
2 |
|
|
|
|
|
| 65 |
Tb |
Terbium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
9 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 66 |
Dy |
Dysprosium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
10 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 67 |
Ho |
Holmium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
11 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 68 |
Er |
Erbium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
12 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 69 |
Tm |
Thulium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
13 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 70 |
Yb |
Ytterbium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
.. |
.. |
2 |
|
|
|
|
|
| 71 |
Lu |
Lutétium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
1 |
.. |
2 |
|
|
|
|
|
| 72 |
Hf |
Hafnium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
2 |
.. |
2 |
|
|
|
|
|
| 73 |
Ta |
Tantale |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
3 |
.. |
2 |
|
|
|
|
|
| 74 |
W |
Tungstène |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
4 |
.. |
2 |
|
|
|
|
|
| 75 |
Re |
Rhénium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
5 |
.. |
2 |
|
|
|
|
|
| 76 |
Os |
Osmium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
6 |
.. |
2 |
|
|
|
|
|
| 77 |
Ir |
Iridium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
7 |
.. |
2 |
|
|
|
|
|
| 78 |
Pt |
Platine |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
9 |
.. |
1 |
|
|
|
|
|
| 79 |
Au |
Or |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
1 |
|
|
|
|
|
| 80 |
Hg |
Mercure |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
|
|
|
|
|
| 81 |
Tl |
Thallium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
1 |
|
|
|
|
| 82 |
Pb |
Plomb |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
2 |
|
|
|
|
| 83 |
Bi |
Bismuth |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
3 |
|
|
|
|
| 84 |
Po |
Polonium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
4 |
|
|
|
|
| 85 |
At |
Astate |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
5 |
|
|
|
|
| 86 |
Rn |
Radon |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
6 |
|
|
|
|
| 7. Période |
K |
L |
M |
N |
O |
P |
Q |
| Nombre |
Symbole |
Nom |
1s |
2s |
2p |
3s |
3p |
3d |
4s |
4p |
4d |
4f |
5s |
5p |
5d |
5f |
6s |
6p |
6d |
6f |
7s |
7p |
| 87 |
Fr |
Francium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
6 |
.. |
.. |
1 |
|
| 88 |
Ra |
Radium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
6 |
.. |
.. |
2 |
|
| 89 |
Ac |
Actinium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
6 |
1 |
.. |
2 |
|
| 90 |
Th |
Thorium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
6 |
2 |
.. |
2 |
|
| 91 |
Pa |
Protactinium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
2 |
2 |
6 |
1 |
.. |
2 |
|
| 92 |
U |
Uranium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
3 |
2 |
6 |
1 |
.. |
2 |
|
| 93 |
Np |
Neptunium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
4 |
2 |
6 |
1 |
.. |
2 |
|
| 94 |
Pu |
Plutonium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
6 |
2 |
6 |
.. |
.. |
2 |
|
| 95 |
Am |
Américium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
7 |
2 |
6 |
.. |
.. |
2 |
|
| 96 |
Cm |
Curium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
7 |
2 |
6 |
1 |
.. |
2 |
|
| 97 |
Bk |
Berkélium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
9 |
2 |
6 |
.. |
.. |
2 |
|
| 98 |
Cf |
Californium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
10 |
2 |
6 |
.. |
.. |
2 |
|
| 99 |
Es |
Einsteinium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
11 |
2 |
6 |
.. |
.. |
2 |
|
| 100 |
Fm |
Fermium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
12 |
2 |
6 |
.. |
.. |
2 |
|
| 101 |
Md |
Mendelévium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
13 |
2 |
6 |
.. |
.. |
2 |
|
| 102 |
No |
Nobélium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
14 |
2 |
6 |
.. |
.. |
2 |
|
| 103 |
Lr |
Lawrencium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
14 |
2 |
6 |
1 |
.. |
2 |
|
| 104 |
Rf |
Rutherfordium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
14 |
2 |
6 |
2 |
.. |
2 |
|
| 105 |
Db |
Dubnium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
14 |
2 |
6 |
3 |
.. |
2 |
|
| 106 |
Sg |
Seaborgium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
14 |
2 |
6 |
4 |
.. |
2 |
|
| 107 |
Bh |
Bohrium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
14 |
2 |
6 |
5 |
.. |
2 |
|
| 108 |
Hs |
Hassium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
14 |
2 |
6 |
6 |
.. |
2 |
|
| 109 |
Mt |
Meitnerium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
14 |
2 |
6 |
7 |
.. |
2 |
|
| 110 |
Ds |
Darmstadtium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
14 |
2 |
6 |
9 |
.. |
1 |
|
| 111 |
Rg |
Roentgenium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
1 |
|
| 112 |
Cn |
Copernicium |
2 |
2 |
6 |
2 |
6 |
10 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
14 |
2 |
6 |
10 |
.. |
2 |
|