|Type:Transition Metal||Atomic weight:265|
|Density @ 293 K: g/cm3||Atomic volume:cm3/mol|
Hassium was first made by a team led by Peter Armbruster and Gottfried Münzenber at the Heavy Ion Research Laboratory in Darmstadt, Germany in 1984. They bombarded lead with iron nuclei to produce three atoms of hassium. The name hassium is derived from the Latin name for the German state of Hesse.
|State (s, l, g):solid|
|Melting point:K ( °C)||Boiling point:K ( °C)|
|Specific heat capacity: J g-1 K-1||Heat of atomization: kJ mol-1|
|Heat of fusion: kJ mol-1||Heat of vaporization : kJ mol-1|
|1st ionization energy: kJ mol-1||2nd ionization energy: kJ mol-1|
|3rd ionization energy: kJ mol-1||Electron affinity: kJ mol-1|
|Shells:2,8,18,32,32,14,2||Electron configuration:[Rn] 5f14 6d6 7s2|
|Minimum oxidation number:||Maximum oxidation number:|
|Min. common oxidation no.:||Max. common oxidation no.:|
|Electronegativity (Pauling Scale):||Polarizability volume:Å3|
Hassium is harmful due to its radioactivity.
Hassium is a synthetic, radioactive metal and has only been produced in tiny amounts.
Hassium is of research interest only.
|Reaction with air:||Reaction with 6 M HCl:|
|Reaction with 15 M HNO3:||Reaction with 6 M NaOH:|
|Atomic radius:pm||Ionic radius (1+ ion):pm|
|Ionic radius (2+ ion):pm||Ionic radius (3+ ion):pm|
|Ionic radius (2- ion):pm||Ionic radius (1- ion):pm|
|Thermal conductivity:W m-1 K-1||Electrical conductivity:x 106 S cm-1|
|Abundance earth's crust:nil|
|Abundance solar system:parts per billion by weight, part per billion by moles|
|Cost, pure:$ per 100g|
|Cost, bulk:$ per 100g|
Hassium is a synthetic, radioactive metal, created via nuclear bombardment. It has only been produced in minute amounts. Hassium is produced by bombarding 208Pb with 58Fe.
Hassium has 5 isotopes whose half-lives are known, with mass numbers from 264 to 269. None are stable. The most stable isotope is 269Hs, with a half-life of 9 seconds.