|
|
| General |
| Name, symbol, number |
Ununoctium, Uuo, 118 |
| Chemical series |
noble gases |
| Group, period, block |
18, 7, p |
| Appearance |
Unknown, probably colorless[1] |
| Standard atomic weight |
(294) g·mol−1 |
| Electron configuration |
[Rn] 7s2 5f14 6d10 7p6[2] |
| Electrons per shell |
2, 8, 18, 32, 32, 18, 8[2] |
| Physical properties |
| Phase |
liquid (or solid – predicted[2]) |
| Density (near r.t.) |
(predicted) 13.65[3] g·cm−3 |
| Boiling point |
(extrapolated) 320–380[2] K
(50–110 °C, 120–220 °F) |
| Critical point |
(extrapolated) 439[4] K, 6.8[4] MPa |
| Heat of fusion |
(extrapolated) 23.5[4] kJ·mol−1 |
| Heat of vaporization |
(extrapolated) 19.4[4] kJ·mol−1 |
| Oxidation states |
0[5], +2[6], +4[6] |
| Ionization energies |
1st: (calc.) 820–1130[2] kJ·mol−1 |
| 2nd: (extrapolated) 1450[7] kJ·mol−1 |
| Atomic radius |
(predicted) 152[3] pm |
| Covalent radius |
(extrapolated) 230[7] pm |
| Miscellaneous |
| CAS registry number |
54144-19-3[1] |
| Selected isotopes |
|
|
| References |
|
|
