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Template:Infobox dubnium

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Dubnium, 105Db
Dubnium
Pronunciation
Mass number[268]
Dubnium in the periodic cairt
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 Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) 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 Gowd Mercur (element) Thallium Leid (element) 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)
rutherfordium ← dubnium → seaborgium
Atomic nummer (Z)105
Groupgroup 5
Periodperiod 7
Blockd-block
Element category  Transeetion metal
Electron confeeguration[Rn] 5f14 6d3 7s2[1]
Electrons per shell2, 8, 18, 32, 32, 11, 2 (predictit)
Pheesical properties
Phase at STPsolit (predictit)[2]
Density (near r.t.)29.3 g/cm3 (predictit)[1][3]
Atomic properties
Oxidation states(+3), (+4), +5[1][3] (Script error: No such module "Engvar".: prediction)
Ionisation energies
  • 1st: 664.8 kJ/mol
  • 2nd: 1546.7 kJ/mol
  • 3rd: 2378.4 kJ/mol
  • (more) (aw estimatit)[1]
Atomic radiusempirical: 139 pm (estimatit)[1]
Covalent radius149 pm (estimatit)[4]
Ither properties
Naitural occurrencesynthetic
Creestal structur ​body-centred cubic (bcc) (predictit)[2]
Body-centered cubic creestal structur for dubnium
CAS Nummer53850-35-4
History
Naminafter the toun o Dubna in Roushie
DiskiveryJynt Institute for Nuclear Research (1968)
Main isotopes o dubnium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
262Db syn 34 s[5][6] 67% α 258Lr
33% SF 263Db syn 27 s[6] 56% SF
41% α 259Lr
3% ε 263mRf
266Db syn 22 min[6] SF
ε 266Rf
267Db syn 1.2 h[6] SF
268Db syn 29 h[6] SF
ε 268Rf
270Db syn 23.15 h[7] SF
| references

Check temperaturs Db: na inpit for C, K, F.

Check temperaturs Db: na inpit for C, K, F.

References

Thir references will appear in the airticle, but this list appears anerly on this page.
  1. 1 2 3 4 5 Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (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.
  2. 1 2 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. 1 2 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.
  4. ↑ Chemical Data. Dubnium - Db, Royal Chemical Society
  5. ↑ Münzenberg, G.; Gupta, M. (2011). "Production and Identification of Transactinide Elements": 877. doi:10.1007/978-1-4419-0720-2_19. Cite journal requires |journal= (help)
  6. 1 2 3 4 5 Six New Isotopes of the Superheavy Elements Discovered. Berkeley Lab. News center. October 26, 2010
  7. ↑ Oganessian, Yuri Ts.; Abdullin, F. Sh.; Bailey, P. D.; et al. (9 Apryle 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.
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