Unbibium
hypothetical chemical element with the atomic number 122
Unbibium, also known as element 122 or eka-thorium, is the possible chemical element in the periodic table with the placeholder symbol of Ubb and atomic number 122. Unbibium and Ubb are the temporary systematic IUPAC name and symbol, which are used until the element is discovered, confirmed, and a permanent name is decided upon. In the periodic table of the elements, it is expected to follow unbiunium as the second element of the superactinides and the fourth element of the 8th period. Similarly to unbiunium, it is expected to fall within the range of the island of stability.
Unbibium | ||||||
---|---|---|---|---|---|---|
Pronunciation | /ˌuːnbaɪˈbaɪəm/ | |||||
Alternative names | element 122, eka-thorium | |||||
Appearance | metallic or silvery white (predicted) | |||||
Unbibium in the periodic table | ||||||
| ||||||
Group | g-block groups (no number) | |||||
Period | period 8 (theoretical, extended table) | |||||
Block | g-block | |||||
Electron configuration | [Og] 7d1 8s2 8p1 (predicted)[1] | |||||
Electrons per shell | 2, 8, 18, 32, 32, 18, 9, 3 (predicted) | |||||
Physical properties | ||||||
Phase at STP | Solid (Predicted) at 298K | |||||
Melting point | 1312.85 K ( °C, °F) | |||||
Boiling point | 2004.19 K ( °C, °F) | |||||
Density (at STP) | 16.362g/ccm g/L | |||||
Triple point | 1312.84 K, kPa | |||||
Critical point | 4313.06 K K, MPa | |||||
Atomic properties | ||||||
Oxidation states | (+4) (predicted)[2] | |||||
Ionization energies | ||||||
Other properties | ||||||
CAS Number | 54576-73-7 | |||||
History | ||||||
Naming | IUPAC systematic element name | |||||
Isotopes of unbibium | ||||||
Template:infobox unbibium isotopes does not exist | ||||||
Another alternative name is Diburnium
References
change- ↑ 1.0 1.1 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. Cite error: Invalid
<ref>
tag; name "Hoffman" defined multiple times with different content - ↑ 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.
- ↑ 3.0 3.1 Eliav, E.; Fritzsche, S.; Kaldor, U. (2015). "Electronic structure theory of the superheavy elements" (pdf). Nuclear Physics A. 944 (December 2015): 518–550. doi:10.1016/j.nuclphysa.2015.06.017.
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