Element Hassium

Hassium ElementIt is not known to occur in nature and has been made only in laboratories in minuscule quantities.
Hassium is a chemical element that is represented with the symbol Hs and the atomic number 108.
Hassium is highly radioactive; the most-stable known isotope 269Hs has a half-life of approximately 16 seconds.
In the periodic table of the elements, hassium is a transactinide element, a member of the 7th period and a group 8 element; it is thus the sixth member of the 6d series of transition metals.

Names and Identifiers

Chemical Formula:Hs
CAS:54037-57-9
Molecular Weight:277.152  g/mol
EC Number :n/a
MDL Number:n/a
Color:unknown (presumably metallic/ silvery white/ gray)
Other Names:Hassio
PubChem CID:56951714
IUPAC Name:Hassium
Inchl:InChI=1S/Hs
InChI Key:OBDWMWVOVYJOMI-UHFFFAOYSA-N
Canonical SMILES:[Hs]
ICSC Number:n/a

Physical & Chemical Properties

Phase:Solid
Density:41 g/cm³
Boiling Point:n/a
Melting Point:n/a
Molecular Formula:Hs
Flash Point:n/a
Exact Mass:269

Hassium has no stable or naturally occurring isotopes. Several radioactive isotopes have been synthesized in the laboratory, either by fusing two atoms or by observing the decay of heavier elements.

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
263Hs263.12871 sα to 259Sg
264Hs264.12840.00008 sα to 260Sg; SF
265Hs265.13016 (99)0.0018 sα to 261Sg; SF
266Hs266.1300
267Hs267.13180.033 sα to 263Sg; SF
268Hs268.1321
269Hs269.13419.3 sα to 265Sg
277Hs27711 m

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