Titane (Ti, Z = 22)
Métal de transition Bloc d Groupe 4 Période 4 Solide (CNTP)
Titanium is a chemical element with symbol Ti and atomic number 22. It is a lustrous transition metal with a silver color, low density and high strength. It is highly resistant to corrosion in sea water, aqua regia and chlorine.
Découvreur : William Gregor
Propriétés physiques
- Masse atomique standard
- 47,87 u
- Densité
- 4,506 g/cm³
- Point de fusion
- 1 941,0 K
- Point d'ébullition
- 3 560,0 K
- Chaleur molaire
- 25,06 J·mol⁻¹·K⁻¹
- Électronégativité (Pauling)
- 1,540
- Affinité électronique
- 7,289 kJ/mol
- Énergies d'ionisation
- 659 ; 1 310 ; 2 653 ; 4 175 kJ/mol
- Configuration électronique
- [Ar] 3d2 4s2
- Électrons par couche
- K : 2 · L : 8 · M : 10 · N : 2
- Aspect
- silvery grey-white metallic
Correspondance ANU historique / conjectural
Comptage de la Chimie Occulte (1908) : 864 ANU (atomes ultimes), soit N/18 = 48,00 — masse « noologique » à comparer à la masse standard 47,867 u et à l'isotope dominant 48Ti. Coefficient k(Z) = 1,077 · multiple de 18
Matériel historique et conjectural — voir la page Pont ANU ↔ Nucléides.
Isotopes (29)
| Nucléide | A | N | Masse (u) | Abondance (%) | Demi-vie | Spin | Parité | Magique |
|---|---|---|---|---|---|---|---|---|
| 37Ti | 37 | 15 | 37,027021 | — | stable | 1/2 | ⁺ | — |
| 38Ti | 38 | 16 | 38,012206 | — | stable | 0 | ⁺ | — |
| 39Ti | 39 | 17 | 39,002684 | — | 28.5 ms | 3/2 | ⁺ | — |
| 40Ti | 40 | 18 | 39,990345 | — | 52.4 ms | 0 | ⁺ | — |
| 41Ti | 41 | 19 | 40,983148 | — | 81.9 ms | 3/2 | ⁺ | — |
| 42Ti | 42 | 20 | 41,973049 | — | 208.3 ms | 0 | ⁺ | N magique |
| 43Ti | 43 | 21 | 42,968528 | — | 509 ms | 7/2 | ⁻ | — |
| 44Ti | 44 | 22 | 43,959690 | — | 59.1 an | 0 | ⁺ | — |
| 45Ti | 45 | 23 | 44,958121 | — | 184.8 min | 7/2 | ⁻ | — |
| 46Ti | 46 | 24 | 45,952626 | 8,2500 | stable | 0 | ⁺ | — |
| 47Ti | 47 | 25 | 46,951757 | 7,4400 | stable | 5/2 | ⁻ | — |
| 48Ti | 48 | 26 | 47,947941 | 73,7200 | stable | 0 | ⁺ | — |
| 49Ti | 49 | 27 | 48,947864 | 5,4100 | stable | 7/2 | ⁻ | — |
| 50Ti | 50 | 28 | 49,944786 | 5,1800 | stable | 0 | ⁺ | N magique |
| 51Ti | 51 | 29 | 50,946609 | — | 5.76 min | 3/2 | ⁻ | — |
| 52Ti | 52 | 30 | 51,946884 | — | 1.7 min | 0 | ⁺ | — |
| 53Ti | 53 | 31 | 52,949671 | — | 32.7 s | 3/2 | — | |
| 54Ti | 54 | 32 | 53,950892 | — | 2.1 s | 0 | ⁺ | — |
| 55Ti | 55 | 33 | 54,955091 | — | 1.3 s | 1/2 | — | |
| 56Ti | 56 | 34 | 55,957678 | — | 200 ms | 0 | ⁺ | — |
| 57Ti | 57 | 35 | 56,963068 | — | 95 ms | 5/2 | ⁻ | — |
| 58Ti | 58 | 36 | 57,966809 | — | 55 ms | 0 | ⁺ | — |
| 59Ti | 59 | 37 | 58,972217 | — | 28.5 ms | 5/2 | ⁻ | — |
| 60Ti | 60 | 38 | 59,976275 | — | 22.2 ms | 0 | ⁺ | — |
| 61Ti | 61 | 39 | 60,982426 | — | 15 ms | 1/2 | ⁻ | — |
| 62Ti | 62 | 40 | 61,986903 | — | — | 0 | ⁺ | — |
| 63Ti | 63 | 41 | 62,993709 | — | — | 1/2 | ⁻ | — |
| 64Ti | 64 | 42 | 63,998411 | — | — | 0 | ⁺ | — |
| 65Ti | 65 | 43 | 65,005593 | — | — | 1/2 | ⁻ | — |
Liseré coloré en première colonne : vert = stable, jaune = demi-vie > 1 an, orange > 1 jour, rouge < 1 jour.