Og
Oganesson
Element 118 · 295.216 u
Unknown Properties
p-block
Period 7
Group 18
Unknown at RT
Radioactive
t½ 0.7 milliseconds
Synthetic
Wikipedia →
Oganesson is the heaviest known element and the only noble gas that may be a solid at room temperature.
Physical Properties
| Atomic Mass | 295.216 u |
| Density | 5.0 g/cm³ |
| Boiling Point | 350.0 K |
| Appearance | Metallic or solid (predicted) |
| State at Room Temp | Unknown |
Chemical Properties
| Oxidation States | -1, 0, +1, +2, +4, +6 |
Atomic Properties
| Electron Configuration | [Rn] 5f14 6d10 7s2 7p6 |
Discovery
| Discovered By | Joint Institute for Nuclear Research / Lawrence Livermore National Laboratory |
| Discovery Year | 2002 |
| Location | Dubna, Russia |
| Named After | Named after Yuri Oganessian, discoverer of many superheavy elements |
About Oganesson
Oganesson is the heaviest element on the periodic table. Despite being a noble gas by group, it may be a solid at room temperature and may not have a closed electron shell. Only five or six atoms have ever been produced.
Uses & Applications
No practical applications. Scientific research only.
Fun Fact
Oganesson may be solid at room temperature and could form chemical bonds, completely defying noble gas conventions.
Isotopes
| Mass Number | Abundance | Half-Life | Stable |
| 294 | - | 0.7 milliseconds | No |
Electron Configuration
[Rn] 5f14 6d10 7s2 7p6