Template:Infobox dubnium

Dubnium,  105Db
General properties
PronunciationTemplate:Infobox element/pronunciation
Standard atomic weight (Ar, standard)Template:Infobox element/standard atomic weight
Mass numberTemplate:Infobox element/symbol-to-most-stable-isotope (most stable isotope)
Dubnium in the periodic table
Template:Infobox element/periodic table
Atomic number (Z)105
GroupTemplate:Infobox element/group
Periodperiod 7
Blockd-block
Element categoryTemplate:Infobox element/category format
Electron configuration[Rn] 5f14 6d3 7s2[1]
Electrons per shell
2, 8, 18, 32, 32, 11, 2
Physical properties
Phase at STPsolid (predicted)[2]
Density (near r.t.)29.3 g/cm3 (predicted)[1][3]
Atomic properties
Oxidation statesTemplate:Infobox element/symbol-to-oxidation-state
[[Ionization energy|Template:Engvar energies]]
  • 1st: 665 kJ/mol
  • 2nd: 1547 kJ/mol
  • 3rd: 2378 kJ/mol
  • (more) (all but first estimated)[1]
Atomic radiusempirical: 139 pm (estimated)[1]
Covalent radius149 pm (estimated)[4]
Template:Infobox element/spectral lines
Other properties
Crystal structureTemplate:Infobox element/crystal structure (predicted)[2]
CAS Number53850-35-4
History
Namingafter Dubna, Moscow Oblast, Russia, site of Joint Institute for Nuclear Research
Discoveryindependently by the Lawrence Berkeley Laboratory and the Joint Institute for Nuclear Research (1970)
Main isotopes of dubnium
Template:Infobox element/isotopes table
| references

Template:Infobox element/element navigation Template:Template reference list Expression error: Unrecognized word "template".

  1. 1.0 1.1 1.2 1.3 1.4 Hoffman, D. C.; Lee, D. M.; Pershina, V. (2006). "Transactinides and the future elements". In Morss, L.R.; Edelstein, N. M.; Fuger, Jean (eds.). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Springer Science+Business Media. pp. 1652–1752. ISBN 978-1-4020-3555-5.
  2. 2.0 2.1 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.
  3. 3.0 3.1 Fricke, B. (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. Archived from the original on October 4, 2013. Retrieved October 4, 2013.
  4. "Dubnium". Royal Chemical Society. Retrieved October 9, 2017.