Rhénium (Re, Z = 75)
Métal de transition Bloc d Groupe 7 Période 6 Solide (CNTP)
Rhenium is a chemical element with symbol Re and atomic number 75. It is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is one of the rarest elements in the Earth's crust.
Découvreur : Masataka Ogawa
Propriétés physiques
- Masse atomique standard
- 186,2 u
- Densité
- 21,02 g/cm³
- Point de fusion
- 3 459,0 K
- Point d'ébullition
- 5 869,0 K
- Chaleur molaire
- 25,48 J·mol⁻¹·K⁻¹
- Électronégativité (Pauling)
- 1,900
- Affinité électronique
- 5,827 kJ/mol
- Énergies d'ionisation
- 760 ; 1 260 ; 2 510 ; 3 640 kJ/mol
- Configuration électronique
- [Xe] 4f14 5d5 6s2
- Électrons par couche
- K : 2 · L : 8 · M : 18 · N : 32 · O : 13 · P : 2
- Aspect
- silvery-grayish
Correspondance ANU historique / conjectural
Comptage de la Chimie Occulte (1908) : 3 368 ANU (atomes ultimes), soit N/18 = 187,11 — masse « noologique » à comparer à la masse standard 186,207 u et à l'isotope dominant 185Re. Coefficient k(Z) = 0,909
Matériel historique et conjectural — voir la page Pont ANU ↔ Nucléides.
Isotopes (41)
| Nucléide | A | N | Masse (u) | Abondance (%) | Demi-vie | Spin | Parité | Magique |
|---|---|---|---|---|---|---|---|---|
| 159Re | 159 | 84 | 158,984106 | — | — | 1/2 | ⁺ | — |
| 160Re | 160 | 85 | 159,981880 | — | 611 µs | 4 | ⁻ | — |
| 161Re | 161 | 86 | 160,977624 | — | 440 µs | 1/2 | ⁺ | — |
| 162Re | 162 | 87 | 161,975896 | — | 107 ms | 2 | — | |
| 163Re | 163 | 88 | 162,972085 | — | 390 ms | 1/2 | ⁺ | — |
| 164Re | 164 | 89 | 163,970507 | — | 719 ms | 2 | — | |
| 165Re | 165 | 90 | 164,967086 | — | 1.6 s | 1/2 | ⁺ | — |
| 166Re | 166 | 91 | 165,965821 | — | 2.25 s | 7 | ⁺ | — |
| 167Re | 167 | 92 | 166,962604 | — | 3.4 s | 9/2 | ⁻ | — |
| 168Re | 168 | 93 | 167,961573 | — | 4.4 s | 7 | ⁺ | — |
| 169Re | 169 | 94 | 168,958766 | — | 8.1 s | 9/2 | ⁻ | — |
| 170Re | 170 | 95 | 169,958235 | — | — | 8 | ⁻ | — |
| 171Re | 171 | 96 | 170,955716 | — | 15.2 s | 9/2 | ⁻ | — |
| 172Re | 172 | 97 | 171,955376 | — | 55 s | 2 | ⁺ | — |
| 173Re | 173 | 98 | 172,953243 | — | 2 min | 5/2 | ⁻ | — |
| 174Re | 174 | 99 | 173,953115 | — | 2.4 min | 3 | ⁺ | — |
| 175Re | 175 | 100 | 174,951381 | — | 5.89 min | 5/2 | ⁻ | — |
| 176Re | 176 | 101 | 175,951623 | — | 5.3 min | 3 | ⁺ | — |
| 177Re | 177 | 102 | 176,950328 | — | 14 min | 5/2 | ⁻ | — |
| 178Re | 178 | 103 | 177,950989 | — | 13.2 min | 3 | ⁺ | — |
| 179Re | 179 | 104 | 178,949990 | — | 19.5 min | 5/2 | — | |
| 180Re | 180 | 105 | 179,950792 | — | 2.46 min | 1 | — | |
| 181Re | 181 | 106 | 180,950062 | — | 19.9 h | 5/2 | ⁺ | — |
| 182Re | 182 | 107 | 181,951212 | — | 64.2 h | 7 | ⁺ | — |
| 183Re | 183 | 108 | 182,950821 | — | 70 j | 5/2 | ⁺ | — |
| 184Re | 184 | 109 | 183,952528 | — | 35.4 j | 3 | ⁻ | — |
| 185Re | 185 | 110 | 184,952958 | 37,4000 | stable | 5/2 | ⁺ | — |
| 186Re | 186 | 111 | 185,954989 | — | 3.7185 j | 1 | ⁻ | — |
| 187Re | 187 | 112 | 186,955752 | 62,6000 | 41.6 Ga | 5/2 | ⁺ | — |
| 188Re | 188 | 113 | 187,958114 | — | 17.005 h | 1 | ⁻ | — |
| 189Re | 189 | 114 | 188,959228 | — | 24.3 h | 5/2 | ⁺ | — |
| 190Re | 190 | 115 | 189,961800 | — | 3 min | 2 | — | |
| 191Re | 191 | 116 | 190,963123 | — | 9.8 min | 3/2 | ⁺ | — |
| 192Re | 192 | 117 | 191,966088 | — | 15.4 s | 0 | ⁻ | — |
| 193Re | 193 | 118 | 192,967545 | — | — | 5/2 | ⁺ | — |
| 194Re | 194 | 119 | 193,970735 | — | 5 s | 1 | ⁻ | — |
| 195Re | 195 | 120 | 194,972560 | — | 6 s | 5/2 | ⁺ | — |
| 196Re | 196 | 121 | 195,975996 | — | 2.4 s | — | — | |
| 197Re | 197 | 122 | 196,978153 | — | — | 5/2 | ⁺ | — |
| 198Re | 198 | 123 | 197,981760 | — | — | — | — | |
| 199Re | 199 | 124 | 198,984187 | — | — | 5/2 | ⁺ | — |
Liseré coloré en première colonne : vert = stable, jaune = demi-vie > 1 an, orange > 1 jour, rouge < 1 jour.