Unbihexium
hypothetical chemical element with the atomic number 126
Unbihexium, also known as element 126 or eka-plutonium, is the possible chemical element with atomic number 126 and placeholder symbol Ubh. Unbihexium and Ubh are the temporary IUPAC name and symbol, until the element is discovered, confirmed, and a permanent name is decided upon. In the periodic table, unbihexium is expected to be a g-block superactinide and the eighth element in the 8th period. It is expected to be surprisingly stable for its size.
| Unbihexium | ||||||
|---|---|---|---|---|---|---|
| Pronunciation | /ˌuːnbaɪˈhɛksiəm/ | |||||
| Alternative names | element 126, eka-plutonium | |||||
| Unbihexium in the periodic table | ||||||
| ||||||
| Group | g-block groups (no number) | |||||
| Period | period 8 (theoretical, extended table) | |||||
| Block | g-block | |||||
| Electron configuration | [Og] 5g2 6f3 8s2 8p1 (predicted)[1] predictions vary, see text | |||||
| Physical properties | ||||||
| unknown | ||||||
| Phase at STP | unknown | |||||
| Atomic properties | ||||||
| Oxidation states | (+1), (+2), (+4), (+6), (+8) (predicted)[2] | |||||
| Other properties | ||||||
| CAS Number | 54500-77-5 | |||||
| History | ||||||
| Naming | IUPAC systematic element name | |||||
| Isotopes of unbihexium | ||||||
| Template:infobox unbihexium isotopes does not exist | ||||||
References
change- ↑ Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". In Morss; Edelstein, Norman M.; Fuger, Jean (eds.). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 978-1-4020-3555-5.
- ↑ Pyykkö, Pekka (2011). "A suggested periodic table up to Z ≤ 172, based on Dirac–Fock calculations on atoms and ions". Physical Chemistry Chemical Physics. 13 (1): 161–8. Bibcode:2011PCCP...13..161P. doi:10.1039/c0cp01575j. PMID 20967377.
