Unbibium

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, 122Ubb
Unbibium
Pronunciation/ˌuːnbaɪˈbaɪəm/ ​(OON-by-BY-əm)
Alternative nameselement 122, eka-thorium
Appearancemetallic or silvery white (predicted)
Unbibium in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Ununennium Unbinilium
Unquadtrium Unquadquadium Unquadpentium Unquadhexium Unquadseptium Unquadoctium Unquadennium Unpentnilium Unpentunium Unpentbium Unpenttrium Unpentquadium Unpentpentium Unpenthexium Unpentseptium Unpentoctium Unpentennium Unhexnilium Unhexunium Unhexbium Unhextrium Unhexquadium Unhexpentium Unhexhexium Unhexseptium Unhexoctium Unhexennium Unseptnilium Unseptunium Unseptbium
Unsepttrium Unseptquadum
Biniltrium Binilunium Binilbium Biniltrium Binilunium Binilbium Biniltrium Binilunium Binilbium Biniltrium Binilunium Binilbium Biniltrium Biunnilium Unpentseptium Unpentoctium Unpentennium Unhexnilium Unhexunium Unhexbium Unhextrium Unhexquadium Unhexpentium Unhexhexium Bibiunium Bibibium Bibiquadium
 Unbiunium Unbibium Unbitrium Unbiquadium Unbipentium Unbihexium Unbiseptium Unbioctium Unbiennium Untrinilium Untriunium Untribium Untritrium Untriquadium Untripentium Untrihexium Untriseptium Untrioctium Untriennium Unquadnilium Unquadunium Unquadbium
Untrioctium Untriennium Unquadnilium Unquadunium Unquadbium Untrioctium Untriennium Unquadnilium Unquadunium Unquadbium Untrioctium Untriennium Unquadnilium Unquadunium Unquadbium Untrioctium Untriennium Unquadnilium Unquadunium Unquadbium Unquadunium Unquadbium
 —
↑
Ubb
↓
[Ush]
unbiunium ← unbibium → unbitrium
Atomic number (Z)122
Groupgroup n/a
Periodperiod 8
Block  g-block
Electrons per shell2, 8, 18, 32, 32, 18, 9, 3
(predicted)
Physical properties
Phase at STPSolid (Predicted) at 298K
Melting point1312.85 K ​( °C, ​ °F)
Boiling point2004.19 K ​( °C, ​ °F)
Density (at STP)16.362g/ccm g/L
Triple point1312.84 K, ​ kPa
Critical point4313.06 K K,  MPa
Atomic properties
Oxidation states(+4) (predicted)[1]
Ionization energies
  • 1st: 545 (predicted)[2] kJ/mol
  • 2nd: 1090 (predicted)[2] kJ/mol
  • 3rd: 1968 (predicted)[3] kJ/mol
Other properties
CAS Number54576-73-7
History
NamingIUPAC systematic element name
Main isotopes of unbibium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
326Ubb syn 84billion 
years
 322Ubn

Another alternative name is Diburnium

References
  1. 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.
  2. 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.
  3. 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 1-4020-3555-1.
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