Nihonium, 113 General properties Pronunciation Template:Infobox element/pronunciation Standard atomic weight (A r, standard ) Template:Infobox element/standard atomic weight Mass number Template:Infobox element/symbol-to-most-stable-isotope (most stable isotope)Nihonium in the periodic table Template:Infobox element/periodic table Atomic number (Z ) 113 Group Template:Infobox element/group Period period 7 Block p-block Element category Template:Infobox element/category format , but probably a post-transition metal Electron configuration [Rn ] 5f14 6d10 7s2 7p1 (predicted) [1] Electrons per shell
2, 8, 18, 32, 32, 18, 3 (predicted) Physical properties Phase at STP solid (predicted) [1] [2] [3] Melting point 700 K (430 °C, 810 °F) (predicted) [1] Boiling point 1430 K (1130 °C, 2070 °F) (predicted) [1] [4] Density (near r.t. ) 16 g/cm3 (predicted) [4] Heat of fusion 7.61 kJ/mol (extrapolated) [3] [[Enthalpy of vaporization|Heat of Template:Engvar ]] 130 kJ/mol (predicted) [2] [4] Atomic properties Oxidation states Template:Infobox element/symbol-to-oxidation-state [[Ionization energy|Template:Engvar energies]] 1st: 704.9 kJ/mol (predicted) [1] 2nd: 2240 kJ/mol (predicted) [4] 3rd: 3020 kJ/mol (predicted) [4] (more ) Atomic radius empirical: 170 pm (predicted) [1] Covalent radius 172–180 pm (extrapolated) [3] Template:Infobox element/spectral lines Other properties Crystal structure Template:Infobox element/crystal structure (extrapolated) [5] CAS Number 54084-70-7 History Naming After Japan (Nihon in Japanese) Discovery RIKEN (Japan, first undisputed claim 2004)JINR (Russia) and Livermore (US, first announcement 2003)Main isotopes of nihonium Template:Infobox element/isotopes table | references
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↑ 1.0 1.1 1.2 1.3 1.4 1.5 Cite error: Invalid <ref> tag; no text was provided for refs named Haire ↑ 2.0 2.1 Seaborg, Glenn T. (c. 2006). "transuranium element (chemical element)" . Encyclopædia Britannica . Retrieved 2010-03-16 . ↑ 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 . ↑ 4.0 4.1 4.2 4.3 4.4 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 . ↑ 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 .