Unbioctium
| properties | |
|---|---|
| Properties (if known) | |
| Name , symbol , atomic number | Unbioctium, Ubo, 128 |
| Element category | Superactinoids |
| Group , period , block | g8 , 8 , g |
| CAS number | 63309-50-2 |
| Atomic | |
| Atomic mass | (calculated) 340 u |
| Electron configuration | [ Og ] 5 g 8 8 s 2 (?) |
| Electrons per energy level | 2, 8, 18, 32, 40, 18, 8, 2 |
| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Values that are particularly questionable are marked with (?) | |
Unbioctium is the chemical element with the atomic number 128 that has not yet been detected. Since there are no natural isotopes of this element , it would have to be produced (synthesized) in an artificial way by nuclear fusion . The name is preliminary and is derived from the ordinal number. Unbioctium is possibly the eighth element to have a g orbital , which would fill the fifth shell with eight additional electrons . In the extended periodic table it belongs to the transactinoids ( it is not shown in the "normal" periodic table ).
Unbioctium probably belongs to an " island of stability ", so that several isotopes, v. a. Ubo-340, could have a longer than average half-life of a few seconds.
