Template:Infobox hassium

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[[Category:Template:Pagetype with short description]]

Hassium, 108Hs
Hassium
Pronunciation/ˈhæsiəm/ (About this soundlisten)[1] (Template:Respell)
Mass number[269] (data not decisive)[lower-alpha 1]
Hassium in the periodic table
Template:Periodic table (32 columns, micro) Os

Hs

(Uhb)
bohriumhassiummeitnerium
Atomic number (Z)108
Groupgroup 8
Periodperiod 7
Block  d-block
Electron configuration[Rn] 5f14 6d6 7s2[4]
Electrons per shell2, 8, 18, 32, 32, 14, 2
Physical properties
Phase at STPsolid (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
  • 1st: 730 kJ/mol
  • 2nd: 1760 kJ/mol
  • 3rd: 2830 kJ/mol
  • (more) (predicted)[9]
Atomic radiusempirical: 126 pm (estimated)[6]
Covalent radius134 pm (estimated)[10]
Other properties
Natural occurrencesynthetic
Crystal structurehexagonal close-packed (hcp)
Hexagonal close-packed crystal structure for hassium

(predicted)[5]
CAS Number54037-57-9
History
Namingafter Hassia, Latin for Hesse, Germany, where it was discovered[11]
DiscoveryGesellschaft für Schwerionenforschung (1984)
Main isotopes of hassium
[[Isotope|IsoTemplate:Shytope]] [[Natural abundance|AbunTemplate:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProTemplate:Shyduct]]
269Hs syn 16 s α 265Sg
270Hs syn 9 s α 266Sg
277mHs syn 110 s SF
Category Category: Hassium
| references

[[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.

Bh ←

i'box Bh

iso
108
Hs (E)
→ Mt

i'box Mt

  Data sets read by {{Infobox element}}
Name and identifiers
Top image (caption, alt)
Pronunciation
Category (enwiki)
Standard atomic weight
  most stable isotope
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Term symbol * (cmt, ref)
Wikidata *
* Not used in {{Infobox element}} (2019-02-03)
See also {{Infobox element/symbol-to--navbox}}

References

  1. "Hassium". The Periodic Table of Videos. The University of Nottingham. Retrieved 2012-10-19.
  2. "Radioactive Elements". Commission on Isotopic Abundances and Atomic Weights. 2018. Retrieved 2020-09-20.
  3. Audi 2017, p. 030001-136.
  4. Hoffman 2006, p. 1672.
  5. 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. 6.0 6.1 6.2 Hoffman 2006, p. 1691.
  7. 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.
  8. 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.
  9. Hoffman 2006, p. 1673.
  10. Robertson, M. (2011). "Chemical Data: Hassium". Visual Elements Periodic Table. Royal Society of Chemistry. Retrieved 28 November 2012.
  11. 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.
  1. 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.[2][3]

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