Plantilya:Infobox hassium

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Hassium
108Hs
Os

Hs

(Uhn)
bohriumhassiummeitnerium
Appearance
silvery (predicted)[1]
General properties
Name, simbolo, kaiphan hassium, Hs, 108
Pronunciation Plantilya:IPAc-en
Plantilya:Respell[2]
Element category puthaw nga transisyon
Group, period, block 87, d
Standard atomic weight [269]
Electron configuration [Rn] 5f14 6d6 7s2
(predicted)[3]
2, 8, 18, 32, 32, 14, 2 (predicted)
Electron shells of hassium (2, 8, 18, 32, 32, 14, 2 (predicted))
History
Discovery Gesellschaft für Schwerionenforschung (1984)
Physical properties
Phase magahi (predicted)
Density (near r.t.) 41 (predicted)[3] g·cm−3
Atomic properties
Oxidation states 8, 6, 5, 4, 3, 2 (predicted)[1][3][4]
(only bolded oxidation states are known experimentally)
Ionization energies
(more)
1st: 733.3 (estimated)[3] kJ·mol−1
2nd: 1756.0 (estimated)[3] kJ·mol−1
3rd: 2827.0 (estimated)[3] kJ·mol−1
Atomic radius 126 (estimated)[3] pm
Covalent radius 134 (estimated)[5] pm
Miscellanea
CAS registry number 54037-57-9
Most stable isotopes
Main article: Isotopes of hassium
iso NA half-life DM DE (MeV) DP
277Hs syn 2 s SF
277mHs ? syn ~11 min[6] SF
271Hs syn ~4 s α 9.27,9.13 267Sg
270Hs syn 3.6 s α 9.02,8.88 266Sg
269Hs syn 9.7 s α 9.21,9.10,8.97 265Sg
only isotopes with half-lives over 1 second are included here
t  h  u
· r

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