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Hassium General

Name:Hassium Symbol:Hs
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.

Hassium States

State (s, l, g):solid
Melting point:K ( °C) Boiling point:K ( °C)

Hassium Energies

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

Hassium Oxidation & Electrons

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 Appearance & Characteristics

Structure: Color:
Harmful effects:

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.

Hassium Reactions

Reaction with air: Reaction with 6 M HCl:
Reaction with 15 M HNO3: Reaction with 6 M NaOH:

Hassium Compounds

Oxide(s): Chloride(s):

Hassium Radius

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

Hassium Conductivity

Thermal conductivity:W m-1 K-1 Electrical conductivity:x 106 S cm-1

Hassium Abundance & Isotopes

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.

Hassium Other



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