Dubnium, 00Db
Dubnium
Pronunciation
Mass number[268]
Dubnium 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 Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Ta

Db

(Ups)
rutherfordiumdubniumseaborgium
Groupమూస:Infobox element/symbol-to-group/format
Periodperiod 7
Block  d-block
Electron configuration[Rn] 5f14 6d3 7s2[3] (predicted)[3]
Electrons per shell2, 8, 18, 32, 32, 11, 2 (predicted)
Physical properties
Phase at STPsolid (predicted)[4]
Density (near r.t.)29.3 g/cm3 (predicted)[3][5]
Atomic properties
Oxidation states(+3), (+4), +5[3][6] (parenthesized: prediction)
Ionization energies
  • 1st: 664.8 kJ/mol
  • 2nd: 1546.7 kJ/mol
  • 3rd: 2378.4 kJ/mol
  • (more) (all estimated)[3]
Atomic radiusempirical: 139 pm (estimated)[3]
Covalent radius149 pm (estimated)[7]
Other properties
Natural occurrencesynthetic
Crystal structurebody-centered cubic (bcc) (predicted)[4]
Body-centered cubic crystal structure for dubnium
CAS Number53850-35-4
History
Namingafter the town of Dubna in Russia
DiscoveryJoint Institute for Nuclear Research (1968)
Isotopes of dubnium
Template:infobox dubnium isotopes does not exist
 Category: Dubnium
| references

References

  1. మూస:MW
  2. "dubnium". Lexico UK English Dictionary. Oxford University Press. Archived from the original on 2019-12-18.
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Haire, Richard G. (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.{{cite book}}: CS1 maint: ref duplicates default (link)
  4. 4.0 4.1 Östlin, A.; Vitos, L. (2011). "First-principles calculation of the structural stability of 6d transition metals". Physical Review B. 84 (11). Bibcode:2011PhRvB..84k3104O. doi:10.1103/PhysRevB.84.113104.
  5. 5.0 5.1 Fricke, Burkhard (1975). "Superheavy elements: a prediction of their chemical and physical properties". Recent Impact of Physics on Inorganic Chemistry. 21: 89–144. doi:10.1007/BFb0116498. Retrieved 4 October 2013.
  6. Fricke, Burkhard (1975). "Superheavy elements: a prediction of their chemical and physical properties". Recent Impact of Physics on Inorganic Chemistry. Structure and Bonding. 21: 89–144. doi:10.1007/BFb0116498. ISBN 978-3-540-07109-9. Retrieved 4 October 2013.
  7. Chemical Data. Dubnium - Db, Royal Chemical Society
  8. Münzenberg, G.; Gupta, M. (2011). "Production and Identification of Transactinide Elements": 877. doi:10.1007/978-1-4419-0720-2_19. {{cite journal}}: Cite journal requires |journal= (help)
  9. 9.0 9.1 9.2 9.3 9.4 Six New Isotopes of the Superheavy Elements Discovered. Berkeley Lab. News center. October 26, 2010
  10. doi:10.1103/PhysRevLett.104.142502
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