Template:Infobox dubnium

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Dubnium, 105Db
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 Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Ta
↑
Db
↓
(Upe)
rutherfordium ← dubnium → seaborgium
Atomic number (Z)105
Groupgroup 5
Periodperiod 7
Block  d-block
Element category  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][6] (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)[7]
Other properties
Natural occurrencesynthetic
Crystal structure ​body-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 Abun­dance Physics:Half-life (t1/2) Decay mode Pro­duct
262Db syn 34 s[8][9] 67% α 258Lr
33% SF
263Db syn 27 s[9] 56% SF
41% α 259Lr
3% ε 263mRf
266Db syn 20 min[9] SF
ε? 266Rf
267Db syn 1.2 h[9] SF
ε? 267Rf
268Db syn 28 h[9] SF
ε? 268Rf
270Db syn 15 h[10] 17% SF
83% α 266Lr
ε? 270Rf
Category Category: Dubnium
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Check temperatures Db: no input for C, K, F.

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

[
]  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
Chemistry:Oxidation states
Spectral lines image
Physics: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

These references will appear in the article, but this list appears only on this page.
  1. ↑ "Dubnium". Merriam-Webster Dictionary. https://www.merriam-webster.com/dictionary/dubnium. Retrieved March 24, 2018. 
  2. ↑ "Dubnium". https://en.oxforddictionaries.com/definition/dubnium. 
  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. 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). doi:10.1103/PhysRevB.84.113104. Bibcode: 2011PhRvB..84k3104O. 
  5. ↑ 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. https://web.archive.org/web/20131004215923/http://www.researchgate.net/publication/225672062_Superheavy_elements_a_prediction_of_their_chemical_and_physical_properties. Retrieved October 4, 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. https://www.researchgate.net/publication/225672062. Retrieved 4 October 2013. 
  7. ↑ "Dubnium". Royal Chemical Society. http://www.rsc.org/chemsoc/visualelements/pages/data/dubnium_data.html. Retrieved October 9, 2017. 
  8. ↑ 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. 
  9. ↑ 9.0 9.1 9.2 9.3 9.4 "Six New Isotopes of the Superheavy Elements Discovered". Berkeley Lab. 2010. Archived from the original on May 5, 2014. https://web.archive.org/web/20140505191355/http://newscenter.lbl.gov/news-releases/2010/10/26/six-new-isotopes/. Retrieved October 9, 2017. 
  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). doi:10.1103/PhysRevLett.104.142502. PMID 20481935. Bibcode: 2010PhRvL.104n2502O. Archived from the original on October 18, 2016. https://web.archive.org/web/20161018065434/https://www.researchgate.net/publication/44610795_Synthesis_of_a_new_element_with_atomic_number_Z__117. 

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