Unbihexium

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Unbihexium, 126Ubh
Unbihexium
Pronunciation/ˌnbˈhɛksiəm/ (OON-by-HEKS-ee-em)
Alternative nameselement 126, eka-plutonium
Appearancepossibly silvery gray[1]
Unbihexium 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


Ubh

(Uon)
unbipentiumunbihexiumunbiseptium
Atomic number (Z)126
Groupn/a
Periodperiod 8
Block  g-block
Electrons per shell2, 8, 18, 32, 34, 21, 8, 3
(predicted)
Physical properties
Phase at STPsolid (predicted)[1]
Melting point>873.15° K ​(>600° °C, ​>1112° °F)
Boiling point>1773.15° K ​(>1500° °C, ​>2732° °F)
Atomic properties
Oxidation states(+1), (+2), (+4), (+6), (+8) (predicted)[2]
Other properties
CAS Number54500-77-5
History
NamingIUPAC systematic element name
Main isotopes of unbihexium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
310Ubh syn
322Ubh syn
354Ubh syn
| references

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.

References[change | change source]

  1. 1.0 1.1 "Unbihexium". www.chemeurope.com. Retrieved 2021-02-07.
  2. 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.