The chemical element hassium is classed as a transition metal. It was discovered in 1984 by a team led by Peter Armbruster and Gottfried Münzenber.
New elements can no longer be discovered in test-tubes. This is the Experimental Storage Ring, forming part of the equipment used in heavy element research at Darmstadt. Image Ref. (1)
Data Zone
| Classification: | Hassium is a transition metal |
| Color: | |
| Atomic weight: | (269), no stable isotopes |
| State: | solid (presumed) |
| Melting point: | |
| Boiling point: | |
| Electrons: | 108 |
| Protons: | 108 |
| Neutrons in most abundant isotope: | 161 |
| Electron shells: | 2,8,18,32,32,14,2 |
| Electron configuration: | 5f14 6d6 7s2 |
| Density @ 20oC: |
| Atomic volume: | – |
| Structure: | – |
| Hardness: | – |
| Specific heat capacity | – |
| Heat of fusion | – |
| Heat of atomization | – |
| Heat of vaporization | – |
| 1st ionization energy | – |
| 2nd ionization energy | – |
| 3rd ionization energy | – |
| Electron affinity | – |
| Minimum oxidation number | – |
| Min. common oxidation no. | – |
| Maximum oxidation number | – |
| Max. common oxidation no. | – |
| Electronegativity (Pauling Scale) | – |
| Polarizability volume | – |
| Reaction with air | – |
| Reaction with 15 M HNO3 | – |
| Reaction with 6 M HCl | – |
| Reaction with 6 M NaOH | – |
| Oxide(s) | – |
| Hydride(s) | – |
| Chloride(s) | – |
| Atomic radius | – |
| Ionic radius (1+ ion) | – |
| Ionic radius (2+ ion) | – |
| Ionic radius (3+ ion) | – |
| Ionic radius (1- ion) | – |
| Ionic radius (2- ion) | – |
| Ionic radius (3- ion) | – |
| Thermal conductivity | – |
| Electrical conductivity | – |
| Freezing/Melting point: | – |
Discovery of Hassium
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-208 with iron-58 nuclei to produce three atoms of hassium.
The name hassium is derived from the Latin name for the German state of Hesse.
Appearance and Characteristics
Harmful effects:
Hassium is harmful due to its radioactivity.
Characteristics:
Hassium is a synthetic, radioactive metal and has only been produced in tiny amounts.
Uses of Hassium
Hassium is of research interest only.
Abundance and Isotopes
Abundance earth’s crust: nil
Abundance solar system: parts per billion by weight, parts per trillion by moles
Cost, pure: $ per 100g
Cost, bulk: $ per 100g
Source: 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.
Isotopes: Hassium has 12 isotopes whose half-lives are known, with mass numbers from 263 to 277. None are stable. The most stable isotope is 269Hs, with a half-life of 9.7 seconds.
References
1. Image by LSDSL
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