Meitnerium is a chemical element wi seembol Mt an atomic nummer 109.

Meitnerium, 109Mt
Meitnerium
Pronunciation
Mass number[278]
Meitnerium 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
Ir

Mt

(Uhu)
hassiummeitneriumdarmstadtium
Atomic nummer (Z)109
Groupgroup 9
Periodperiod 7
Blockd-block
Element category  Unkent chemical properties
Electron confeeguration[Rn] 5f14 6d7 7s2 (predictit)[3][4]
Electrons per shell2, 8, 18, 32, 32, 15, 2 (predictit)
Pheesical properties
Phase at STPsolit (predictit)[5]
Density (near r.t.)37.4 g/cm3 (predictit)[3]
Atomic properties
Oxidation states(+1), (+3), (+4), (+6), (+8), (+9) (predicted)[3][6][7][8]
Ionisation energies
  • 1st: 800.8 kJ/mol
  • 2nd: 1823.6 kJ/mol
  • 3rd: 2904.2 kJ/mol
  • (more) (aw estimatit)[3]
Atomic radiusempirical: 128 pm (predictit)[3][8]
Covalent radius129 pm (estimatit)[9]
Ither properties
Naitural occurrencesynthetic
Creestal structur ​face-centred cubic
[[File:face-centred cubic|frameless|alt=Face-centred cubic creestal structur for meitnerium|upright=0.23|Face-centred cubic creestal structur for meitnerium]]

(predictit)[5]
Magnetic orderinparamagnetic (predicted)[10]
CAS Nummer54038-01-6
History
Naminafter Lise Meitner
DiskiveryGesellschaft für Schwerionenforschung (1982)
Main isotopes o meitnerium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
278Mt syn 7.6 s α 274Bh
276Mt syn 0.72 s α 272Bh
274Mt syn 0.44 s α 270Bh
270mMt ? syn 1.1 s α 266Bh
| references

ReferencesEedit

  1. Emsley, John (2003). Nature's Building Blocks. Oxford University Press. ISBN 978-0198503408. Retrieved 12 November 2012.
  2. "Meitnerium". Periodic Table of Videos. The University of Nottingham. Retrieved 15 October 2012.
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 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 978-1-4020-3555-5. Cite error: Invalid <ref> tag; name "Haire" defined multiple times wi different content
  4. Thierfelder, C.; Schwerdtfeger, P.; Heßberger, F. P.; Hofmann, S. (2008). "Dirac-Hartree-Fock studies of X-ray transitions in meitnerium". The European Physical Journal A. 36 (2): 227. Bibcode:2008EPJA...36..227T. doi:10.1140/epja/i2008-10584-7.
  5. 5.0 5.1 5.2 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.
  6. 6.0 6.1 Ionova, G. V.; Ionova, I. S.; Mikhalko, V. K.; Gerasimova, G. A.; Kostrubov, Yu. N.; Suraeva, N. I. (2004). "Halides of Tetravalent Transactinides (Rf, Db, Sg, Bh, Hs, Mt, 110th Element): Physicochemical Properties". Russian Journal of Coordination Chemistry. 30 (5): 352. doi:10.1023/B:RUCO.0000026006.39497.82.
  7. 7.0 7.1 Himmel, Daniel; Knapp, Carsten; Patzschke, Michael; Riedel, Sebastian (2010). "How Far Can We Go? Quantum-Chemical Investigations of Oxidation State +IX". ChemPhysChem. 11 (4): 865–9. doi:10.1002/cphc.200900910. PMID 20127784.
  8. 8.0 8.1 8.2 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.
  9. Chemical Data. Meitnerium - Mt, Royal Chemical Society
  10. Saito, Shiro L. (2009). "Hartree–Fock–Roothaan energies and expectation values for the neutral atoms He to Uuo: The B-spline expansion method". Atomic Data and Nuclear Data Tables. 95 (6): 836. Bibcode:2009ADNDT..95..836S. doi:10.1016/j.adt.2009.06.001.
  11. Emsley, John (2003). Nature's Building Blocks. Oxford University Press. ISBN 978-0198503408. Retrieved 12 November 2012.
  12. "Meitnerium". Periodic Table of Videos. The University of Nottingham. Retrieved 15 October 2012.
  13. Thierfelder, C.; Schwerdtfeger, P.; Heßberger, F. P.; Hofmann, S. (2008). "Dirac-Hartree-Fock studies of X-ray transitions in meitnerium". The European Physical Journal A. 36 (2): 227. Bibcode:2008EPJA...36..227T. doi:10.1140/epja/i2008-10584-7.