Rhodium (Rh, Z = 45)
45
Rh
102,906 u
Métal de transition Bloc d Groupe 9 Période 5 Solide (CNTP)
Rhodium is a chemical element with symbol Rh and atomic number 45. It is a rare, silvery-white, hard, and chemically inert transition metal. It is a member of the platinum group.
Découvreur : William Hyde Wollaston
Propriétés physiques
- Masse atomique standard
- 102,9 u
- Densité
- 12,41 g/cm³
- Point de fusion
- 2 237,0 K
- Point d'ébullition
- 3 968,0 K
- Chaleur molaire
- 24,98 J·mol⁻¹·K⁻¹
- Électronégativité (Pauling)
- 2,280
- Affinité électronique
- 110,3 kJ/mol
- Énergies d'ionisation
- 720 ; 1 740 ; 2 997 kJ/mol
- Configuration électronique
- [Kr] 4d8 5s1
- Électrons par couche
- K : 2 · L : 8 · M : 18 · N : 16 · O : 1
- Aspect
- silvery white metallic
Correspondance ANU historique / conjectural
Comptage de la Chimie Occulte (1908) : 1 876 ANU (atomes ultimes), soit N/18 = 104,22 — masse « noologique » à comparer à la masse standard 102,906 u et à l'isotope dominant 103Rh. Coefficient k(Z) = 0,979
Matériel historique et conjectural — voir la page Pont ANU ↔ Nucléides.
Isotopes (41)
| Nucléide | A | N | Masse (u) | Abondance (%) | Demi-vie | Spin | Parité | Magique |
|---|---|---|---|---|---|---|---|---|
| 88Rh | 88 | 43 | 87,960429 | — | — | — | — | |
| 89Rh | 89 | 44 | 88,950992 | — | stable | 9/2 | ⁺ | — |
| 90Rh | 90 | 45 | 89,944569 | — | 29 ms | 0 | ⁺ | — |
| 91Rh | 91 | 46 | 90,937123 | — | 1.47 s | 9/2 | ⁺ | — |
| 92Rh | 92 | 47 | 91,932368 | — | 5.61 s | 6 | ⁺ | — |
| 93Rh | 93 | 48 | 92,925913 | — | 13.9 s | 9/2 | ⁺ | — |
| 94Rh | 94 | 49 | 93,921730 | — | 70.6 s | 4 | ⁺ | — |
| 95Rh | 95 | 50 | 94,915898 | — | 5.02 min | 9/2 | N magique | |
| 96Rh | 96 | 51 | 95,914452 | — | 9.9 min | 6 | ⁺ | — |
| 97Rh | 97 | 52 | 96,911328 | — | 30.7 min | 9/2 | ⁺ | — |
| 98Rh | 98 | 53 | 97,910708 | — | 8.72 min | 2 | — | |
| 99Rh | 99 | 54 | 98,908121 | — | 16.1 j | 1/2 | ⁻ | — |
| 100Rh | 100 | 55 | 99,908114 | — | 20.8 h | 1 | ⁻ | — |
| 101Rh | 101 | 56 | 100,906159 | — | 4.07 an | 1/2 | ⁻ | — |
| 102Rh | 102 | 57 | 101,906834 | — | 207 j | 2 | ⁻ | — |
| 103Rh | 103 | 58 | 102,905494 | 100,0000 | stable | 1/2 | ⁻ | — |
| 104Rh | 104 | 59 | 103,906645 | — | 42.3 s | 1 | ⁺ | — |
| 105Rh | 105 | 60 | 104,905688 | — | 35.341 h | 7/2 | ⁺ | — |
| 106Rh | 106 | 61 | 105,907286 | — | 30.07 s | 1 | ⁺ | — |
| 107Rh | 107 | 62 | 106,906748 | — | 21.7 min | 7/2 | ⁺ | — |
| 108Rh | 108 | 63 | 107,908715 | — | 16.8 s | 1 | ⁺ | — |
| 109Rh | 109 | 64 | 108,908750 | — | 80.8 s | 7/2 | ⁺ | — |
| 110Rh | 110 | 65 | 109,911080 | — | 3.35 s | 1 | ⁺ | — |
| 111Rh | 111 | 66 | 110,911643 | — | 11 s | 7/2 | ⁺ | — |
| 112Rh | 112 | 67 | 111,914405 | — | 3.4 s | 1 | ⁺ | — |
| 113Rh | 113 | 68 | 112,915440 | — | 2.8 s | 7/2 | ⁺ | — |
| 114Rh | 114 | 69 | 113,918722 | — | 1.85 s | 1 | ⁺ | — |
| 115Rh | 115 | 70 | 114,920312 | — | 1.03 s | 7/2 | ⁺ | — |
| 116Rh | 116 | 71 | 115,924062 | — | 685 ms | 1 | ⁺ | — |
| 117Rh | 117 | 72 | 116,926036 | — | 421 ms | 7/2 | ⁺ | — |
| 118Rh | 118 | 73 | 117,930341 | — | 282 ms | 1 | ⁺ | — |
| 119Rh | 119 | 74 | 118,932557 | — | 190 ms | 7/2 | ⁺ | — |
| 120Rh | 120 | 75 | 119,937069 | — | 129.6 ms | 8 | ⁻ | — |
| 121Rh | 121 | 76 | 120,939613 | — | 74 ms | 7/2 | ⁺ | — |
| 122Rh | 122 | 77 | 121,944305 | — | 51 ms | 7 | ⁻ | — |
| 123Rh | 123 | 78 | 122,947192 | — | 42 ms | 7/2 | ⁺ | — |
| 124Rh | 124 | 79 | 123,952002 | — | 30 ms | 2 | ⁺ | — |
| 125Rh | 125 | 80 | 124,955094 | — | 26.5 ms | 7/2 | ⁺ | — |
| 126Rh | 126 | 81 | 125,960064 | — | 19 ms | 1 | ⁻ | — |
| 127Rh | 127 | 82 | 126,963789 | — | 28 ms | 7/2 | ⁺ | N magique |
| 128Rh | 128 | 83 | 127,970649 | — | — | — | — |
Liseré coloré en première colonne : vert = stable, jaune = demi-vie > 1 an, orange > 1 jour, rouge < 1 jour.