Zinc (Zn, Z = 30)
Métal de transition Bloc d Groupe 12 Période 4 Solide (CNTP)
Zinc, in commerce also spelter, is a chemical element with symbol Zn and atomic number 30. It is the first element of group 12 of the periodic table. In some respects zinc is chemically similar to magnesium:its ion is of similar size and its only common oxidation state is +2.
Découvreur : India
Propriétés physiques
- Masse atomique standard
- 65,38 u
- Densité
- 7,140 g/cm³
- Point de fusion
- 692,7 K
- Point d'ébullition
- 1 180,0 K
- Chaleur molaire
- 25,47 J·mol⁻¹·K⁻¹
- Électronégativité (Pauling)
- 1,650
- Affinité électronique
- -58,00 kJ/mol
- Énergies d'ionisation
- 906 ; 1 733 ; 3 833 ; 5 731 kJ/mol
- Configuration électronique
- [Ar] 3d10 4s2
- Électrons par couche
- K : 2 · L : 8 · M : 18 · N : 2
- Aspect
- silver-gray
Correspondance ANU historique / conjectural
Comptage de la Chimie Occulte (1908) : 1 170 ANU (atomes ultimes), soit N/18 = 65,00 — masse « noologique » à comparer à la masse standard 65,382 u et à l'isotope dominant 64Zn. Coefficient k(Z) = 1,034 · multiple de 18
Matériel historique et conjectural — voir la page Pont ANU ↔ Nucléides.
Isotopes (33)
| Nucléide | A | N | Masse (u) | Abondance (%) | Demi-vie | Spin | Parité | Magique |
|---|---|---|---|---|---|---|---|---|
| 54Zn | 54 | 24 | 53,993879 | — | 1.8 ms | 0 | ⁺ | — |
| 55Zn | 55 | 25 | 54,984681 | — | 19.8 ms | 5/2 | ⁻ | — |
| 56Zn | 56 | 26 | 55,972743 | — | 32.4 ms | 0 | ⁺ | — |
| 57Zn | 57 | 27 | 56,965056 | — | 45.7 ms | 7/2 | ⁻ | — |
| 58Zn | 58 | 28 | 57,954590 | — | 86 ms | 0 | ⁺ | N magique |
| 59Zn | 59 | 29 | 58,949312 | — | 178.7 ms | 3/2 | ⁻ | — |
| 60Zn | 60 | 30 | 59,941841 | — | 2.38 min | 0 | ⁺ | — |
| 61Zn | 61 | 31 | 60,939507 | — | 89.1 s | 3/2 | ⁻ | — |
| 62Zn | 62 | 32 | 61,934333 | — | 9.193 h | 0 | ⁺ | — |
| 63Zn | 63 | 33 | 62,933211 | — | 38.47 min | 3/2 | ⁻ | — |
| 64Zn | 64 | 34 | 63,929142 | 49,1700 | stable | 0 | ⁺ | — |
| 65Zn | 65 | 35 | 64,929241 | — | 243.94 j | 5/2 | ⁻ | — |
| 66Zn | 66 | 36 | 65,926034 | 27,7300 | stable | 0 | ⁺ | — |
| 67Zn | 67 | 37 | 66,927127 | 4,0400 | stable | 5/2 | ⁻ | — |
| 68Zn | 68 | 38 | 67,924844 | 18,4500 | stable | 0 | ⁺ | — |
| 69Zn | 69 | 39 | 68,926550 | — | 56.4 min | 1/2 | ⁻ | — |
| 70Zn | 70 | 40 | 69,925319 | 0,6100 | stable | 0 | ⁺ | — |
| 71Zn | 71 | 41 | 70,927720 | — | 2.4 min | 1/2 | ⁻ | — |
| 72Zn | 72 | 42 | 71,926843 | — | 46.5 h | 0 | ⁺ | — |
| 73Zn | 73 | 43 | 72,929583 | — | 24.5 s | 1/2 | ⁻ | — |
| 74Zn | 74 | 44 | 73,929407 | — | 95.6 s | 0 | ⁺ | — |
| 75Zn | 75 | 45 | 74,932840 | — | 10.2 s | 7/2 | ⁺ | — |
| 76Zn | 76 | 46 | 75,933115 | — | 5.7 s | 0 | ⁺ | — |
| 77Zn | 77 | 47 | 76,936887 | — | 2.08 s | 7/2 | ⁺ | — |
| 78Zn | 78 | 48 | 77,938289 | — | 1.47 s | 0 | ⁺ | — |
| 79Zn | 79 | 49 | 78,942638 | — | 746 ms | 9/2 | ⁺ | — |
| 80Zn | 80 | 50 | 79,944553 | — | 562.2 ms | 0 | ⁺ | N magique |
| 81Zn | 81 | 51 | 80,950403 | — | 299.4 ms | 1/2 | ⁺ | — |
| 82Zn | 82 | 52 | 81,954574 | — | 177.9 ms | 0 | ⁺ | — |
| 83Zn | 83 | 53 | 82,961041 | — | 100 ms | 3/2 | ⁺ | — |
| 84Zn | 84 | 54 | 83,965829 | — | 54 ms | 0 | ⁺ | — |
| 85Zn | 85 | 55 | 84,973054 | — | — | 5/2 | ⁺ | — |
| 86Zn | 86 | 56 | 85,978463 | — | stable | 0 | ⁺ | — |
Liseré coloré en première colonne : vert = stable, jaune = demi-vie > 1 an, orange > 1 jour, rouge < 1 jour.