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| Eliyúmu | ||||
|---|---|---|---|---|
 | ||||
| Makoki bayike | ||||
| ||||
| Nkombo | Eliyúmu | |||
| ZElembo | 2He | |||
| Série chimique | Gaz-are | |||
| Lingómba, Eleko, blok | 18, 1, s | |||
| Masi ya mbinga | 0,1785 kg/m3 | |||
| Bokasi ya Mohs | — | |||
| Lángi | Ezate | |||
| Makoki ya baatome | ||||
| Masi ya atome | 4,002602 u | |||
| Nsasa(reyo) ya atome (calc.) |
? (31) pm | |||
| Reyo ya covalence |
32 pm | |||
| Reyo de van der Waals |
140 pm | |||
| Configuration électronique |
1s2 | |||
| Baélectron na niveau d'énergie |
2 | |||
| Boyangeli(état) ya oxydation (oxyde) |
0 eyebani te | |||
| Structure cristalline |
Exagonal | |||
| Makoki ya Fízíkí | ||||
| État ordinaire | Gaz | |||
| Température de fusion |
0,95 K | |||
| Température de vaporisation |
4,216 K | |||
| Énergie de fusion | 5,23 kJ/mol | |||
| Énergie de vaporisation |
0,0845 kJ/mol | |||
| Mbinga ya mole | 21,0×10-3 m³/mol | |||
| Pression de vapeur | ? | |||
| Vitesse du son | 970 m/s à 20 °C | |||
| Misusu | ||||
| Électronégativité (Pauling) |
? | |||
| Chaleur massique | 5 193 J/(kg.K) | |||
| Conductivité électrique | ? S/m | |||
| Conductivité thermique | 0,142 W/(m.K) | |||
| 1er potentiel d'ionisation | 2 372,3 kJ/mol | |||
| 2e potentiel d'ionisation | 5 250,5 | |||
| isotope | ||||
| isotope=3He | an=10-4 | n=1 | ||||
| isotope=4He | an=100 | n=2 | ||||
| isotope=6He | an=syn. | pr=0,806 7 s | ||||
| md=β- | ed=3,5 | pd=6Li
| ||||
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