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Rutherfordium is a chemical element wi seembol Rf an atomic nummer 104, named in honour o pheesicist Ernest Rutherford.

Rutherfordium,  104Rf
General properties
Mass nummer 267 (most stable isotope)
Rutherfordium 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
Hf

Rf

(Uph)
lawrenciumrutherfordiumdubnium
Atomic nummer (Z) 104
Group group 4
Period period 7
Element category   transition metal
Block d-block
Electron confeeguration [Rn] 5f14 6d2 7s2[1][2]
Electrons per shell
2, 8, 18, 32, 32, 10, 2
Pheesical properties
Phase (at STP) solit (predictit)[1][2]
Meltin pynt 2400 K ​(2100 °C, ​3800 °F) (predictit)[1][2]
Bylin pynt 5800 K ​(5500 °C, ​9900 °F) (predictit)[1][2]
Density (near r.t.) 23.2 g/cm3 (predictit)[1][2][3]
Atomic properties
Oxidation states 4,[1] (3), (2)[2][3] ​(parenthesized numbers are predictions)
Ionisation energies
  • 1st: 579.9 kJ/mol
  • 2nd: 1389.4 kJ/mol
  • 3rd: 2296.4 kJ/mol
  • (more) (all estimated)[2]
Atomic radius empirical: 150 pm (estimatit)[2]
Covalent radius 157 pm (estimatit)[1]
Miscellanea
Creestal structurhexagonal close-packed (hcp)
Hexagonal close-packed creestal structur for rutherfordium

(predicted)[4]
CAS Nummer 53850-36-5
History
Namin after Ernest Rutherford
Diskivery Jynt Institute for Nuclear Research (1964)
Main isotopes o rutherfordium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct 261Rf syn 70 s[5] >80% α 257No
<15% ε 261Lr
<10% SF
263Rf syn 15 min[5] <100% SF
~30% α 259No
265Rf syn 1.0+1.2
−0.3
 min
[6][7][8]
SF
266Rf? syn 10? h SF?/α?
267Rf syn 1.3 h[5] SF
268Rf? syn 6? h SF?/α?
| references | in Wikidata

ReferencesEedit

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Chemical Data. Rutherfordium - Rf, Royal Chemical Society
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". In Morss; Edelstein, Norman M.; Fuger, Jean. The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 1-4020-3555-1. 
  3. 3.0 3.1 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. 
  4. 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 5.2 Sonzogni, Alejandro. "Interactive Chart of Nuclides". National Nuclear Data Center: Brookhaven National Laboratory. Retrieved 2008-06-06. 
  6. Ellison, P.; Gregorich, K.; Berryman, J.; Bleuel, D.; Clark, R.; Dragojević, I.; Dvorak, J.; Fallon, P.; et al. (2010). "New Superheavy Element Isotopes: 242Pu(48Ca,5n)285114". Physical Review Letters. 105 (18): 182701. Bibcode:2010PhRvL.105r2701E. doi:10.1103/PhysRevLett.105.182701. PMID 21231101. 
  7. http://cyclotron.tamu.edu/she2015/assets/pdfs/presentations/Utyonkov_SHE_2015_TAMU.pdf
  8. Utyonkov, V. K.; Brewer, N. T.; Oganessian, Yu. Ts.; Rykaczewski, K. P.; Abdullin, F. Sh.; Dmitriev, S. N.; Grzywacz, R. K.; Itkis, M. G.; Miernik, K.; Polyakov, A. N.; Roberto, J. B.; Sagaidak, R. N.; Shirokovsky, I. V.; Shumeiko, M. V.; Tsyganov, Yu. S.; Voinov, A. A.; Subbotin, V. G.; Sukhov, A. M.; Sabel'nikov, A. V.; Vostokin, G. K.; Hamilton, J. H.; Stoyer, M. A.; Strauss, S. Y. (15 September 2015). "Experiments on the synthesis of superheavy nuclei 284Fl and 285Fl in the 239,240Pu + 48Ca reactions". Physical Review C. 92 (3). doi:10.1103/PhysRevC.92.034609.