Template:Infobox hassium
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[[Category:Template:Pagetype with short description]]
| Hassium | |||||||||||||||||||||
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| Pronunciation | /ˈhæsiəm/ ( | ||||||||||||||||||||
| Mass number | [269] (data not decisive)[lower-alpha 1] | ||||||||||||||||||||
| Hassium in the periodic table | |||||||||||||||||||||
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| Atomic number (Z) | 108 | ||||||||||||||||||||
| Group | group 8 | ||||||||||||||||||||
| Period | period 7 | ||||||||||||||||||||
| Block | d-block | ||||||||||||||||||||
| Electron configuration | [Rn] 5f14 6d6 7s2[4] | ||||||||||||||||||||
| Electrons per shell | 2, 8, 18, 32, 32, 14, 2 | ||||||||||||||||||||
| Physical properties | |||||||||||||||||||||
| Phase at STP | solid (predicted)[5] | ||||||||||||||||||||
| Density (near r.t.) | 41 g/cm3 (predicted)[6] | ||||||||||||||||||||
| Atomic properties | |||||||||||||||||||||
| Oxidation states | (+2), (+3), (+4), (+6), +8[6][7][8] (parenthesized: prediction) | ||||||||||||||||||||
| Ionization energies | |||||||||||||||||||||
| Atomic radius | empirical: 126 pm (estimated)[6] | ||||||||||||||||||||
| Covalent radius | 134 pm (estimated)[10] | ||||||||||||||||||||
| Other properties | |||||||||||||||||||||
| Natural occurrence | synthetic | ||||||||||||||||||||
| Crystal structure | hexagonal close-packed (hcp) (predicted)[5] | ||||||||||||||||||||
| CAS Number | 54037-57-9 | ||||||||||||||||||||
| History | |||||||||||||||||||||
| Naming | after Hassia, Latin for Hesse, Germany, where it was discovered[11] | ||||||||||||||||||||
| Discovery | Gesellschaft für Schwerionenforschung (1984) | ||||||||||||||||||||
| Main isotopes of hassium | |||||||||||||||||||||
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[[Category:Infobox templates|Template:Remove first word]]Check temperatures Hs: no input for C, K, F.
Check temperatures Hs: no input for C, K, F.
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| most stable isotope | |
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| Electron configuration (cmt, ref) | |
| Term symbol * (cmt, ref) | |
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| * Not used in {{Infobox element}} (2019-02-03) See also {{Infobox element/symbol-to--navbox}} | |
References
- ↑ "Hassium". The Periodic Table of Videos. The University of Nottingham. Retrieved 2012-10-19.
- ↑ "Radioactive Elements". Commission on Isotopic Abundances and Atomic Weights. 2018. Retrieved 2020-09-20.
- ↑ Audi 2017, p. 030001-136.
- ↑ Hoffman 2006, p. 1672.
- ↑ 5.0 5.1 Östlin, A. (2013). "Transition metals". Electronic Structure Studies and Method Development for Complex Materials (PDF) (Licentiate). pp. 15–16. Retrieved 24 October 2019.
- ↑ 6.0 6.1 6.2 Hoffman 2006, p. 1691.
- ↑ Fricke, B. (1975). "Superheavy elements: a prediction of their chemical and physical properties". In Tofield, B. C.; Fricke, B. (eds.). Recent Impact of Physics on Inorganic Chemistry. Structure and Bonding. 21. p. 116. doi:10.1007/BFb0116498. ISBN 978-3-540-07109-9. Retrieved 4 October 2013.
- ↑ Düllmann, C. E. (2008). Investigation of group 8 metallocenes @ TASCA (PDF). 7th Workshop on Recoil Separator for Superheavy Element Chemistry TASCA 08. Archived from the original (PDF) on 30 April 2014. Retrieved 28 August 2020.
- ↑ Hoffman 2006, p. 1673.
- ↑ Robertson, M. (2011). "Chemical Data: Hassium". Visual Elements Periodic Table. Royal Society of Chemistry. Retrieved 28 November 2012.
- ↑ Emsley, J. (2011). Nature's Building Blocks: An A–Z Guide to the Elements (New ed.). Oxford University Press. pp. 215–217. ISBN 978-0-19-960563-7.
- ↑ The most stable isotope of hassium cannot be determined based on existing data due to uncertainty that arises from the low number of measurements. The confidence interval of half-life of 269Hs corresponding to one standard deviation is, based on existing data, Template:Val seconds, whereas that of 270Hs is Template:Val seconds. It is also possible that 277mHs is more stable than both of these, with its half-life likely being Template:Val seconds, but only one event of decay of this isotope has been registered as of 2016[update].[2][3]
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