Nobelium (No, Z = 102)
102
No
259,000 u
Actinide Bloc f Groupe 3 Période 7 Solide (CNTP)
Nobelium is a synthetic chemical element with symbol No and atomic number 102. It is named in honor of Alfred Nobel, the inventor of dynamite and benefactor of science. A radioactive metal, it is the tenth transuranic element and is the penultimate member of the actinide series.
Découvreur : Joint Institute for Nuclear Research
Propriétés physiques
- Masse atomique standard
- 259,0 u
- Densité
- —
- Point de fusion
- 1 100,0 K
- Point d'ébullition
- —
- Chaleur molaire
- —
- Électronégativité (Pauling)
- 1,300
- Affinité électronique
- -223,2 kJ/mol
- Énergies d'ionisation
- 642 kJ/mol
- Configuration électronique
- [Rn] 5f14 7s2
- Électrons par couche
- K : 2 · L : 8 · M : 18 · N : 32 · O : 32 · P : 8 · Q : 2
Isotopes (17)
| Nucléide | A | N | Masse (u) | Abondance (%) | Demi-vie | Spin | Parité | Magique |
|---|---|---|---|---|---|---|---|---|
| 248No | 248 | 146 | 248,086623 | — | stable | 0 | ⁺ | — |
| 249No | 249 | 147 | 249,087802 | — | 57 µs | 5/2 | ⁺ | — |
| 250No | 250 | 148 | 250,087565 | — | 5.08 µs | 0 | ⁺ | — |
| 251No | 251 | 149 | 251,088942 | — | 800 ms | 7/2 | ⁺ | — |
| 252No | 252 | 150 | 252,088966 | — | 2.467 s | 0 | ⁺ | — |
| 253No | 253 | 151 | 253,090563 | — | 1.57 min | 9/2 | ⁻ | — |
| 254No | 254 | 152 | 254,090954 | — | 51.2 s | 0 | ⁺ | — |
| 255No | 255 | 153 | 255,093196 | — | 3.52 min | 1/2 | ⁺ | — |
| 256No | 256 | 154 | 256,094282 | — | 2.91 s | 0 | ⁺ | — |
| 257No | 257 | 155 | 257,096884 | — | 24.5 s | 3/2 | ⁺ | — |
| 258No | 258 | 156 | 258,098205 | — | 1.23 ms | 0 | ⁺ | — |
| 259No | 259 | 157 | 259,100998 | — | 58 min | 9/2 | ⁺ | — |
| 260No | 260 | 158 | 260,102641 | — | 106 ms | 0 | ⁺ | — |
| 261No | 261 | 159 | 261,105696 | — | — | — | — | |
| 262No | 262 | 160 | 262,107463 | — | — | 0 | ⁺ | — |
| 263No | 263 | 161 | 263,110714 | — | — | — | — | |
| 264No | 264 | 162 | 264,112734 | — | — | 0 | ⁺ | — |
Liseré coloré en première colonne : vert = stable, jaune = demi-vie > 1 an, orange > 1 jour, rouge < 1 jour.