Template:Infobox tennessine/sandbox
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[[Category:Template:Pagetype with short description]]
Ununseptium | ||||||||||||||||
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Appearance | semimetallic (predicted)[1] | |||||||||||||||
Ununseptium in the periodic table | ||||||||||||||||
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Atomic number (Z) | 117 | |||||||||||||||
Group | group 17 (halogens) | |||||||||||||||
Period | period 7 | |||||||||||||||
Block | ||||||||||||||||
Element categories | , but probably a metalloid | |||||||||||||||
Electron configuration | (predicted)[2] | |||||||||||||||
Electrons per shell | 2, 8, 18, 32, 32, 18, 7 (predicted) | |||||||||||||||
Physical properties | ||||||||||||||||
Phase at STP | solid (predicted)[2][3] | |||||||||||||||
Melting point | 573–773 K (300–500 °C, 572–932 °F) (predicted)[2] | |||||||||||||||
Boiling point | 823 K (550 °C, 1022 °F) (predicted)[2] | |||||||||||||||
Density (near r.t.) | 7.1–7.3 g/cm3 (extrapolated)[3] | |||||||||||||||
Atomic properties | ||||||||||||||||
Oxidation states | Template:Infobox element/symbol-to-oxidation-state: Symbol "Uus" not known | |||||||||||||||
Ionization energies | ||||||||||||||||
Atomic radius | empirical: 138 pm (predicted)[3] | |||||||||||||||
Covalent radius | 156–157 pm (extrapolated)[3] | |||||||||||||||
Other properties | ||||||||||||||||
CAS Number | 54101-14-3 | |||||||||||||||
History | ||||||||||||||||
Naming | IUPAC systematic element name | |||||||||||||||
Discovery | Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory (2010) | |||||||||||||||
Main isotopes of ununseptium | ||||||||||||||||
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References
- ↑ 1.0 1.1 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.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Haire, Richard G. (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. pp. 1724, 1728. ISBN 1-4020-3555-1.
- ↑ 3.0 3.1 3.2 3.3 3.4 Bonchev, Danail; Kamenska, Verginia (1981). "Predicting the Properties of the 113–120 Transactinide Elements". Journal of Physical Chemistry. American Chemical Society. 85 (9): 1177–1186. doi:10.1021/j150609a021.
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