Nihonium

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Nihonium, 113Nh
Nihonium
Pronunciation/nɪˈhniəm/ (nih-HOH-nee-əm)
Mass number[286]
Nihonium 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
Tl

Nh

(Uhs)
coperniciumnihoniumflerovium
Atomic nummer (Z)113
Groupgroup 13 (boron group)
Periodperiod 7
Blockp-block
Element category  Unkent chemical properties, but probably a post-transeetion metal
Electron confeeguration[Rn] 5f14 6d10 7s2 7p1 (predictit)[1]
Electrons per shell2, 8, 18, 32, 32, 18, 3 (predictit)
Pheesical properties
Phase at STPsolid (predicted)[1][2][3]
Meltin pynt700 K ​(430 °C, ​810 °F) (predictit)[1]
Bylin pynt1430 K ​(1130 °C, ​2070 °F) (predictit)[1][4]
Density (near r.t.)16 g/cm3 (predictit)[4]
Heat o fusion7.61 kJ/mol (extrapolatit)[3]
Heat o vapourisation130 kJ/mol (predictit)[2][4]
Atomic properties
Oxidation states(−1), (+1), (+3), (+5) (predicted)[1][4][5]
Ionisation energies
  • 1st: 704.9 kJ/mol (predictit)[1]
  • 2nd: 2240 kJ/mol (predictit)[4]
  • 3rd: 3020 kJ/mol (predictit)[4]
  • (more)
Atomic radiusempirical: 170 pm (predictit)[1]
Covalent radius172–180 pm (extrapolatet)[3]
Ither properties
Naitural occurrencesynthetic
Creestal structurhexagonal close-packed (hcp)
Hexagonal close-packed creestal structur for nihonium

(extrapolatit)[6]
CAS Nummer54084-70-7
History
NaminEfter Japan (Nihon in Japanese)
DiskiveryRiken (Japan, first undisputit claim 2004)
JINR (Roushie) an Livermore (US, first annooncement 2003)
Main isotopes o nihonium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
290Nh[7] syn 2 s? α 286Rg
287Nh[8] syn 5.5 s? α 283Rg
286Nh syn 9.5 s α 282Rg
285Nh syn 4.2 s α 281Rg
284Nh syn 0.91 s α 280Rg
EC 284Cn
283Nh syn 75 ms α 279Rg
282Nh syn 73 ms α 278Rg
278Nh syn 1.4 ms α 274Rg
| references

Nihonium is a chemical element wi atomic nummer 113.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 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.
  2. 2.0 2.1 Seaborg, Glenn T. (c. 2006). "transuranium element (chemical element)". Encyclopædia Britannica. Retrieved 2010-03-16. Italic or bold markup not allowed in: |publisher= (help)
  3. 3.0 3.1 3.2 Bonchev, Danail; Kamenska, Verginia (1981). "Predicting the Properties of the 113–120 Transactinide Elements". Journal of Physical Chemistry. 85 (9): 1177–1186. doi:10.1021/j150609a021.
  4. 4.0 4.1 4.2 4.3 4.4 4.5 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.
  5. Thayer, John S. (2010). "Relativistic Effects and the Chemistry of the Heavier Main Group Elements". In Barysz, Maria; Ishikawa, Yasuyuki (eds.). Relativistic Methods for Chemists. Springer. pp. 63–67. doi:10.1007/978-1-4020-9975-5_2. ISBN 978-1-4020-9974-8.
  6. Keller, O. L., Jr.; Burnett, J. L.; Carlson, T. A.; Nestor, C. W., Jr. (1969). "Predicted Properties of the Super Heavy Elements. I. Elements 113 and 114, Eka-Thallium and Eka-Lead". The Journal of Physical Chemistry. 74 (5): 1127−1134. doi:10.1021/j100700a029.
  7. Hofmann, S.; Heinz, S.; Mann, R.; Maurer, J.; Münzenberg, G.; Antalic, S.; Barth, W.; Burkhard, H. G.; Dahl, L.; Eberhardt, K.; Grzywacz, R.; Hamilton, J. H.; Henderson, R. A.; Kenneally, J. M.; Kindler, B.; Kojouharov, I.; Lang, R.; Lommel, B.; Miernik, K.; Miller, D.; Moody, K. J.; Morita, K.; Nishio, K.; Popeko, A. G.; Roberto, J. B.; Runke, J.; Rykaczewski, K. P.; Saro, S.; Scheidenberger, C.; Schött, H. J.; Shaughnessy, D. A.; Stoyer, M. A.; Thörle-Popiesch, P.; Tinschert, K.; Trautmann, N.; Uusitalo, J.; Yeremin, A. V. (2016). "Review of even element super-heavy nuclei and search for element 120". The European Physics Journal A. 2016 (52). Bibcode:2016EPJA...52..180H. doi:10.1140/epja/i2016-16180-4.
  8. Hofmann, S.; Heinz, S.; Mann, R.; Maurer, J.; Münzenberg, G.; Antalic, S.; Barth, W.; Burkhard, H. G.; Dahl, L.; Eberhardt, K.; Grzywacz, R.; Hamilton, J. H.; Henderson, R. A.; Kenneally, J. M.; Kindler, B.; Kojouharov, I.; Lang, R.; Lommel, B.; Miernik, K.; Miller, D.; Moody, K. J.; Morita, K.; Nishio, K.; Popeko, A. G.; Roberto, J. B.; Runke, J.; Rykaczewski, K. P.; Saro, S.; Schneidenberger, C.; Schött, H. J.; Shaughnessy, D. A.; Stoyer, M. A.; Thörle-Pospiech, P.; Tinschert, K.; Trautmann, N.; Uusitalo, J.; Yeremin, A. V. (2016). "Remarks on the Fission Barriers of SHN and Search for Element 120". In Peninozhkevich, Yu. E.; Sobolev, Yu. G. (eds.). Exotic Nuclei: EXON-2016 Proceedings of the International Symposium on Exotic Nuclei. Exotic Nuclei. pp. 155–164. ISBN 9789813226555.