TABLEAU PÉRIODIQUE DES ÉLÉMENTS
| Numéro du groupe→ |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
Nombre maxi d'e– sur le niveau ↓ |
| Numéro de la période ↓ |
I A |
II A |
III B |
IV B |
V B |
VI B |
VII B |
VIII B |
I B |
II B |
III A |
IV A |
V A |
VI A |
VII A |
VIII A |
| 1 |
| 1 |
Hydrogène |
|
| |
H |
1 |
| -1 |
|
| +1 |
|
| |
|
| |
|
| |
|
| |
|
| 2,2 |
1,0080 |
|
|
|
|
|
|
|
|
|
|
Les chiffres romains correspondent au nombre d'électrons externes
|
|
Nom de l'élément
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2 |
| 2 |
|
|
|
|
|

Téléchargez le fichier pdf pour l'impression
263 KB
|
|
|
|
Numéro atomique Z
|
| |
|
Valences
|
| |
Valence la plus fréquente en gras
|
| |
| |
| Electronégativité |
|
| 92 |
Uranium |
☢ |
| |
U |
2 |
| +3 |
8 |
| +4 |
18 |
| +5 |
32 |
| +6 |
21 |
| |
9 |
| |
2 |
| 1,4 |
238,03 |
|
Masse atomique A
|
|
Radioactif
|
| |
|
Nombre d'électrons sur les différents niveaux
|
| |
| |
Au centre: Symbole de l'élément (en bleu si artificiel)
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 9 |
Fluor |
|
| |
F |
2 |
| -1 |
7 |
| |
|
| |
|
| |
|
| |
|
| |
|
| 3,9 |
18,998 |
|
|
|
8 |
| 3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 17 |
Chlore |
|
| |
Cl |
2 |
| -1 |
8 |
| +1 |
7 |
| +3 |
|
| +5 |
|
| +7 |
|
| |
|
| 3,1 |
35,45 |
|
|
|
18 |
| 4 |
|
|
| 21 |
Scandium |
|
| |
Sc |
2 |
| +3 |
8 |
| |
9 |
| |
2 |
| |
|
| |
|
| |
|
| 1,3 |
44,956 |
|
|
|
|
|
|
|
| Eléments normaux |
| Métaux alcalins |
| Métaux alcalino-terreux |
| Métaux pauvres |
| Métalloïdes |
| Non métaux |
| Halogènes |
| Gaz rares |
|
|
| Eléments de transition |
| Métaux de transition |
| Lanthanides |
| Actinides |
|
|
|
|
|
|
|
| 22 |
Titane |
|
| |
Ti |
2 |
| +2 |
8 |
| +3 |
10 |
| +4 |
2 |
| |
|
| |
|
| |
|
| 1,5 |
47,867 |
|
|
| 23 |
Vanadium |
|
| |
V |
2 |
| +2 |
8 |
| +3 |
11 |
| +4 |
2 |
| +5 |
|
| |
|
| |
|
| 1,6 |
50,942 |
|
|
| 24 |
Chrome |
|
| |
Cr |
2 |
| +2 |
8 |
| +3 |
13 |
| +6 |
1 |
| |
|
| |
|
| |
|
| 1,6 |
51,996 |
|
|
| 25 |
Manganèse |
|
| |
Mn |
2 |
| +2 |
8 |
| +3 |
13 |
| +4 |
2 |
| +6 |
|
| +7 |
|
| |
|
| 1,5 |
54,938 |
|
|
| 26 |
Fer |
|
| |
Fe |
2 |
| +2 |
8 |
| +3 |
14 |
| |
2 |
| |
|
| |
|
| |
|
| 1,8 |
55,845 |
|
|
| 27 |
Cobalt |
|
| |
Co |
2 |
| +2 |
8 |
| +3 |
15 |
| |
2 |
| |
|
| |
|
| |
|
| 1,8 |
58,933 |
|
|
| 28 |
Nickel |
|
| |
Ni |
2 |
| +2 |
8 |
| +3 |
16 |
| |
2 |
| |
|
| |
|
| |
|
| 1,8 |
58,693 |
|
|
| 29 |
Cuivre |
|
| |
Cu |
2 |
| +1 |
8 |
| +2 |
18 |
| |
1 |
| |
|
| |
|
| |
|
| 1,9 |
63,546 |
|
|
| 30 |
Zinc |
|
| |
Zn |
2 |
| +2 |
8 |
| |
18 |
| |
2 |
| |
|
| |
|
| |
|
| 1,6 |
65,38 |
|
|
|
|
|
|
| 35 |
Brome |
|
| |
Br |
2 |
| -1 |
8 |
| +1 |
18 |
| +5 |
7 |
| |
|
| |
|
| |
|
| 3,0 |
79,904 |
|
|
| 36 |
Krypton |
|
| |
Kr |
2 |
| |
8 |
| |
18 |
| |
8 |
| |
|
| |
|
| |
|
| |
83,798 |
|
|
32 |
| 5 |
|
|
| 39 |
Yttrium |
|
| |
Y |
2 |
| +2 |
8 |
| +3 |
18 |
| |
9 |
| |
2 |
| |
|
| |
|
| 1,2 |
88,906 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 40 |
Zirconium |
|
| |
Zr |
2 |
| +4 |
8 |
| |
18 |
| |
10 |
| |
2 |
| |
|
| |
|
| 1,4 |
91,224 |
|
|
| 41 |
Niobium |
|
| |
Nb |
2 |
| +3 |
8 |
| +5 |
18 |
| |
12 |
| |
1 |
| |
|
| |
|
| 1,6 |
92,906 |
|
|
| 42 |
Molybdène |
|
| |
Mo |
2 |
| +2 |
8 |
| +3 |
18 |
| +4 |
13 |
| +5 |
1 |
| +6 |
|
| |
|
| 1,8 |
95,95 |
|
|
| 43 |
Technécium |
☢ |
| |
Tc |
2 |
| +7 |
8 |
| |
18 |
| |
14 |
| |
1 |
| |
|
| |
|
| 1,9 |
[97] |
|
|
| 44 |
Ruthénium |
|
| |
Ru |
2 |
| +2 |
8 |
| +3 |
18 |
| +4 |
15 |
| +6 |
1 |
| +8 |
|
| |
|
| 2,2 |
101,07 |
|
|
| 45 |
Rhodium |
|
| |
Rh |
2 |
| +2 |
8 |
| +3 |
18 |
| +4 |
16 |
| |
1 |
| |
|
| |
|
| 2,2 |
102,91 |
|
|
| 46 |
Palladium |
|
| |
Pd |
2 |
| +2 |
8 |
| +4 |
18 |
| |
18 |
| |
0 |
| |
|
| |
|
| 2,2 |
106,42 |
|
|
| 47 |
Argent |
|
| |
Ag |
2 |
| +1 |
8 |
| |
18 |
| |
18 |
| |
1 |
| |
|
| |
|
| 1,9 |
107,87 |
|
|
| 48 |
Cadmium |
|
| |
Cd |
2 |
| +2 |
8 |
| |
18 |
| |
18 |
| |
2 |
| |
|
| |
|
| 1,7 |
112,41 |
|
|
|
|
|
|
| 53 |
Iode |
|
| |
I |
2 |
| -1 |
8 |
| +1 |
18 |
| +3 |
18 |
| +5 |
7 |
| +7 |
|
| |
|
| 2,7 |
126,90 |
|
|
| 54 |
Xénon |
|
| |
Xe |
2 |
| |
8 |
| |
18 |
| |
18 |
| |
8 |
| |
|
| |
|
| |
131,29 |
|
|
50 |
| 6 |
|
|
| 57 |
Lanthane |
|
| |
La |
2 |
| +3 |
8 |
| |
18 |
| |
18 |
| |
9 |
| |
2 |
| |
|
| 1,1 |
138,91 |
|
|
| 58 |
Cérium |
|
| |
Ce |
2 |
| +3 |
8 |
| +4 |
18 |
| |
20 |
| |
8 |
| |
2 |
| |
|
| 1,1 |
140,12 |
|
|
| 59 |
Praséodyme |
|
| |
Pr |
2 |
| +3 |
8 |
| +4 |
18 |
| |
21 |
| |
8 |
| |
2 |
| |
|
| 1,1 |
140,91 |
|
|
| 60 |
Néodyme |
|
| |
Nd |
2 |
| +3 |
8 |
| |
18 |
| |
22 |
| |
8 |
| |
2 |
| |
|
| 1,1 |
144,24 |
|
|
| 61 |
Prométhium |
☢ |
| |
Pm |
2 |
| +3 |
8 |
| |
18 |
| |
23 |
| |
8 |
| |
2 |
| |
|
| 1,1 |
[145] |
|
|
| 62 |
Samarium |
|
| |
Sm |
2 |
| +2 |
8 |
| +3 |
18 |
| |
24 |
| |
8 |
| |
2 |
| |
|
| 1,1 |
150,36 |
|
|
| 63 |
Europium |
|
| |
Eu |
2 |
| +2 |
8 |
| +3 |
18 |
| |
25 |
| |
8 |
| |
2 |
| |
|
| 1,1 |
151,96 |
|
|
| 64 |
Gadolinium |
|
| |
Gd |
2 |
| +3 |
8 |
| |
18 |
| |
25 |
| |
9 |
| |
2 |
| |
|
| 1,1 |
157,25 |
|
|
| 65 |
Terbium |
|
| |
Tb |
2 |
| +3 |
8 |
| +4 |
18 |
| |
27 |
| |
8 |
| |
2 |
| |
|
| 1,2 |
158,93 |
|
|
| 66 |
Dysprosium |
|
| |
Dy |
2 |
| +3 |
8 |
| |
18 |
| |
28 |
| |
8 |
| |
2 |
| |
|
| 1,2 |
162,50 |
|
|
| 67 |
Holmium |
|
| |
Ho |
2 |
| +3 |
8 |
| |
18 |
| |
29 |
| |
8 |
| |
2 |
| |
|
| 1,2 |
164,93 |
|
|
| 68 |
Erbium |
|
| |
Er |
2 |
| +3 |
8 |
| |
18 |
| |
30 |
| |
8 |
| |
2 |
| |
|
| 1,2 |
167,26 |
|
|
| 69 |
Thulium |
|
| |
Tm |
2 |
| +2 |
8 |
| +3 |
18 |
| |
31 |
| |
8 |
| |
2 |
| |
|
| 1,2 |
168,93 |
|
|
| 70 |
Ytterbium |
|
| |
Yb |
2 |
| +2 |
8 |
| +3 |
18 |
| |
32 |
| |
8 |
| |
2 |
| |
|
| 1,2 |
173,05 |
|
|
| 71 |
Lutétium |
|
| |
Lu |
2 |
| +3 |
8 |
| |
18 |
| |
32 |
| |
9 |
| |
2 |
| |
|
| 1,2 |
174,97 |
|
|
| 72 |
Hafnium |
|
| |
Hf |
2 |
| +4 |
8 |
| |
18 |
| |
32 |
| |
10 |
| |
2 |
| |
|
| 1,3 |
178,49 |
|
|
| 73 |
Tantale |
|
| |
Ta |
2 |
| +5 |
8 |
| |
18 |
| |
32 |
| |
11 |
| |
2 |
| |
|
| 1,5 |
180,95 |
|
|
| 74 |
Tungstène |
|
| |
W |
2 |
| +2 |
8 |
| +3 |
18 |
| +4 |
32 |
| +5 |
12 |
| +6 |
2 |
| |
|
| 1,7 |
183,84 |
|
|
| 75 |
Rhénium |
|
| |
Re |
2 |
| +2 |
8 |
| +3 |
18 |
| +6 |
32 |
| +4 |
13 |
| +7 |
2 |
| |
|
| 1,9 |
186,21 |
|
|
| 76 |
Osmium |
|
| |
Os |
2 |
| +2 |
8 |
| +3 |
18 |
| +4 |
32 |
| +6 |
14 |
| +8 |
2 |
| |
|
| 2,2 |
190,23 |
|
|
| 77 |
Iridium |
|
| |
Ir |
2 |
| +2 |
8 |
| +3 |
18 |
| +4 |
32 |
| +6 |
17 |
| |
0 |
| |
|
| 2,2 |
192,22 |
|
|
| 78 |
Platine |
|
| |
Pt |
2 |
| +2 |
8 |
| +4 |
18 |
| |
32 |
| |
17 |
| |
1 |
| |
|
| 2,2 |
195,08 |
|
|
| 79 |
Or |
|
| |
Au |
2 |
| +1 |
8 |
| +3 |
18 |
| |
32 |
| |
18 |
| |
1 |
| |
|
| 2,4 |
196,97 |
|
|
| 80 |
Mercure |
|
| |
Hg |
2 |
| +1 |
8 |
| +2 |
18 |
| |
32 |
| |
18 |
| |
2 |
| |
|
| 1,9 |
200,59 |
|
|
|
|
|
|
|
| 86 |
Radon |
☢ |
| |
Rn |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
18 |
| |
8 |
| |
|
| |
[222] |
|
|
72 |
| 7 |
|
|
| 89 |
Actinium |
☢ |
| |
Ac |
2 |
| +3 |
8 |
| |
18 |
| |
32 |
| |
18 |
| |
9 |
| |
2 |
| 1,1 |
[227] |
|
|
| 90 |
Thorium |
☢ |
| |
Th |
2 |
| +4 |
8 |
| |
18 |
| |
32 |
| |
18 |
| |
10 |
| |
2 |
| 1,3 |
232,04 |
|
|
| 91 |
Protactinium |
☢ |
| |
Pa |
2 |
| +4 |
8 |
| +5 |
18 |
| |
32 |
| |
20 |
| |
9 |
| |
2 |
| 1,4 |
231,04 |
|
|
| 92 |
Uranium |
☢ |
| |
U |
2 |
| +3 |
8 |
| +4 |
18 |
| +5 |
32 |
| +6 |
21 |
| |
9 |
| |
2 |
| 1,4 |
238,03 |
|
|
| 93 |
Neptunium |
☢ |
| |
Np |
2 |
| +3 |
8 |
| +4 |
18 |
| +5 |
32 |
| +6 |
23 |
| |
8 |
| |
2 |
| 1,4 |
[237] |
|
|
| 94 |
Plutonium |
☢ |
| |
Pu |
2 |
| +3 |
8 |
| +4 |
18 |
| +5 |
32 |
| +6 |
24 |
| |
8 |
| |
2 |
| 1,3 |
[244] |
|
|
| 95 |
Américium |
☢ |
| |
Am |
2 |
| +3 |
8 |
| +4 |
18 |
| +5 |
32 |
| +6 |
25 |
| |
8 |
| |
2 |
| 1,3 |
[243] |
|
|
| 96 |
Curium |
☢ |
| |
Cm |
2 |
| +3 |
8 |
| |
18 |
| |
32 |
| |
25 |
| |
9 |
| |
2 |
| 1,3 |
[247] |
|
|
| 97 |
Berkélium |
☢ |
| |
Bk |
2 |
| +3 |
8 |
| +4 |
18 |
| |
32 |
| |
27 |
| |
8 |
| |
2 |
| 1,3 |
[247] |
|
|
| 98 |
Californium |
☢ |
| |
Cf |
2 |
| +3 |
8 |
| |
18 |
| |
32 |
| |
28 |
| |
8 |
| |
2 |
| 1,3 |
[251] |
|
|
| 99 |
Einsteinium |
☢ |
| |
Es |
2 |
| +3 |
8 |
| |
18 |
| |
32 |
| |
29 |
| |
8 |
| |
2 |
| 1,3 |
[252] |
|
|
| 100 |
Fermium |
☢ |
| |
Fm |
2 |
| +3 |
8 |
| |
18 |
| |
32 |
| |
30 |
| |
8 |
| |
2 |
| 1,3 |
[257] |
|
|
| 101 |
Mendélévium |
☢ |
| |
Md |
2 |
| +3 |
8 |
| |
18 |
| |
32 |
| |
31 |
| |
8 |
| |
2 |
| 1,3 |
[258] |
|
|
| 102 |
Nobélium |
☢ |
| |
No |
2 |
| +3 |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
8 |
| |
2 |
| 1,3 |
[259] |
|
|
| 103 |
Lawrencium |
☢ |
| |
Lr |
2 |
| +3 |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
9 |
| |
2 |
| 1,3 |
[262] |
|
|
| 104 |
Rutherfordium |
☢ |
| |
Rf |
2 |
| +4 |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
10 |
| |
2 |
| |
[267] |
|
|
| 105 |
Dubnium |
☢ |
| |
Db |
2 |
| +5 |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
11 |
| |
2 |
| |
[268] |
|
|
| 106 |
Seaborgium |
☢ |
| |
Sg |
2 |
| +6 |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
12 |
| |
2 |
| |
[269] |
|
|
| 107 |
Bohrium |
☢ |
| |
Bh |
2 |
| +7 |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
13 |
| |
2 |
| |
[270] |
|
|
| 108 |
Hassium |
☢ |
| |
Hs |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
14 |
| |
2 |
| |
[269] |
|
|
| 109 |
Meitnerium |
☢ |
| |
Mt |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
15 |
| |
2 |
| |
[277] |
|
|
| 110 |
Darmstadtium |
☢ |
| |
Ds |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
17 |
| |
1 |
| |
[281] |
|
|
| 111 |
Roentgenium |
☢ |
| |
Rg |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
18 |
| |
1 |
| |
[282] |
|
|
| 112 |
Copernicium |
☢ |
| |
Cn |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
18 |
| |
2 |
| |
[285] |
|
|
| 113 |
Nihonium |
☢ |
| |
Nh |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
18 |
| |
3 |
| |
[286] |
|
|
| 114 |
Flérovium |
☢ |
| |
Fl |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
18 |
| |
4 |
| |
[290] |
|
|
| 115 |
Moscovium |
☢ |
| |
Mc |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
18 |
| |
5 |
| |
[290] |
|
|
| 116 |
Livermorium |
☢ |
| |
Lv |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
18 |
| |
6 |
| |
[293] |
|
|
| 117 |
Tennesse |
☢ |
| |
Ts |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
32 |
| |
18 |
| |
7 |
| |
[294] |
|
|
| 118 |
Oganesson |
☢ |
| |
Og |
2 |
| |
8 |
| |
18 |
| |
32 |
| |
50 |
| |
18 |
| |
8 |
| |
[294] |
|
|
98 |
| Familles → |
Métaux alcalins |
Métaux alcalino-terreux |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Titane |
Vanadium |
Chrome |
Manganèse |
Fer (26 à 28) et Platine (44 à 46 et 76 à 78) |
Cuivre |
Zinc |
Métaux terreux |
Carbonides ou Cristallogènes |
Azotides ou Pnictogènes |
Sulfurides ou Chalcogènes |
Halogènes |
Gaz rares ou nobles |
|
p=paire
c=célibat |
(1c) |
(2c) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(3c) |
(4c) |
(1p 3c) |
(2p 2c) |
(3p 1c) |
Th. Fumey 2008 / Rev. 2025 |