Template:Infobox dubnium

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[[Category:Template:Pagetype with short description]]

Dubnium, 105Db
Dubnium
Pronunciation
Mass number[268]
Dubnium in the periodic table
Template:Periodic table (32 columns, micro) Ta

Db

(Upe)
rutherfordiumdubniumseaborgium
Atomic number (Z)105
Groupgroup 5
Periodperiod 7
Block  d-block
Electron configuration[Rn] 5f14 6d3 7s2[3]
Electrons per shell2, 8, 18, 32, 32, 11, 2
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][5] (parenthesized: prediction)
Ionization energies
  • 1st: 665 kJ/mol
  • 2nd: 1547 kJ/mol
  • 3rd: 2378 kJ/mol
  • (more) (all but first estimated)[3]
Atomic radiusempirical: 139 pm (estimated)[3]
Covalent radius149 pm (estimated)[6]
Other properties
Natural occurrencesynthetic
Crystal structurebody-centered cubic (bcc) (predicted)[4]
Body-centered cubic crystal structure for dubnium
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
[[Isotope|IsoTemplate:Shytope]] [[Natural abundance|AbunTemplate:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProTemplate:Shyduct]]
262Db syn 34 s[7][8] 67% α 258Lr
33% SF
263Db syn 27 s[8] 56% SF
41% α 259Lr
3% ε 263mRf
266Db syn 20 min[8] SF
ε? 266Rf
267Db syn 1.2 h[8] SF
ε? 267Rf
268Db syn 28 h[8] SF
ε? 268Rf
α[9] 264Lr
270Db syn 15 h[10] 17% SF
83% α 266Lr
ε? 270Rf
Category Category: Dubnium
| references

[[Category:Infobox templates|Template:Remove first word]]Check temperatures Db: no input for C, K, F.

Check temperatures Db: no input for C, K, F.

Rf ←

i'box Rf

iso
105
Db (E)
→ Sg

i'box Sg

  Data sets read by {{Infobox element}}
Name and identifiers
Top image (caption, alt)
Pronunciation
Category (enwiki)
Standard atomic weight
  most stable isotope
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Term symbol * (cmt, ref)
Wikidata *
* Not used in {{Infobox element}} (2019-02-03)
See also {{Infobox element/symbol-to--navbox}}

References

  1. "Dubnium". Merriam-Webster. Retrieved March 24, 2018.
  2. "Dubnium". Oxford Dictionaries: English. Retrieved March 24, 2018.
  3. 3.0 3.1 3.2 3.3 3.4 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.
  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, 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.
  6. "Dubnium". Royal Chemical Society. Retrieved October 9, 2017.
  7. Münzenberg, G.; Gupta, M. (2011). "Production and Identification of Transactinide Elements". Handbook of Nuclear Chemistry. Springer. p. 877. doi:10.1007/978-1-4419-0720-2_19.
  8. 8.0 8.1 8.2 8.3 8.4 "Six New Isotopes of the Superheavy Elements Discovered". Berkeley Lab. 2010. Archived from the original on May 5, 2014. Retrieved October 9, 2017.
  9. http://flerovlab.jinr.ru/index.php/2020/12/25/she-factory-first-experiment/
  10. Oganessian, Yu. Ts.; Abdullin, F. Sh.; Bailey, P. D.; et al. (2010). "Synthesis of a New Element with Atomic Number Z=117". Physical Review Letters. American Physical Society. 104 (142502). Bibcode:2010PhRvL.104n2502O. doi:10.1103/PhysRevLett.104.142502. PMID 20481935. Archived from the original on October 18, 2016.

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