|
110
Ds
(281)
|
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 by LSDSL.
| Classification: | Darmstadtium is a transition metal |
| Color: | |
| Atomic weight: | (281), no stable isotopes |
| State: | solid (presumed) |
| Melting point: | |
| Boiling point: | |
| Shells: | 2,8,18,32,32,17,1 |
| Electron configuration: | [Rn] 5f14 6d8 7s2 |
| Density @ 20oC: | |
| Atomic volume: | |
| Structure: | |
| Hardness: |
Discovery of Darmstadtium
Darmstadtium was first synthesized by research scientists at the Heavy Ion Research Laboratory in Darmstadt, Germany in 1994.
The element was made by bombarding lead-208 atoms with nickel-62 atoms in a heavy ion accelerator.
Four atoms of darmstadtium were produced in the first experiment.
The element is named after the city where it was first made.
In addition to darmstadtium, the Heavy Ion Research Laboratory has been responsible for the discovery of several heavy elements: bohrium in 1981, meitnerium in 1982, hassium in 1984, roentgenium in 1994, and copernicium in 1996.
Appearance & Characteristics
Darmstadtium is radioactive.
Harmful effects:
Darmstadtium is harmful as a result of its radioactivity.
Characteristics:
Darmstadtium is a synthetic radioactive metal and has only been produced in tiny amounts.
Darmstadtium is of research interest only.
Darmstadtium is harmful as a result of its radioactivity.
Characteristics:
Darmstadtium is a synthetic radioactive metal and has only been produced in tiny amounts.
Uses of Darmstadtium
Darmstadtium is of research interest only.
Abundance & Isotopes
Abundance earth's crust: nil
Abundance solar system: nil
Cost, pure: per 100g
Cost, bulk: per 100g
Source: Darmstadtium is a synthetic radioactive metal, created via nuclear bombardment, and has only been produced in minute amounts. Darmstadtium is produced by bombarding 208Pb with 62Ni.
Isotopes: Darmstadtium has 8 isotopes whose half-lives are known, with mass numbers from 267 to 281. None are stable. The most stable isotope is 281Ds, with a half-life of 11.1 seconds.
Abundance solar system: nil
Cost, pure: per 100g
Cost, bulk: per 100g
Source: Darmstadtium is a synthetic radioactive metal, created via nuclear bombardment, and has only been produced in minute amounts. Darmstadtium is produced by bombarding 208Pb with 62Ni.
Isotopes: Darmstadtium has 8 isotopes whose half-lives are known, with mass numbers from 267 to 281. None are stable. The most stable isotope is 281Ds, with a half-life of 11.1 seconds.
Energies
Specific heat capacity: J g-1 K-1
Heat of fusion: kJ mol-1
1st ionization energy: kJ mol-1
3rd ionization energy: kJ mol-1
Heat of fusion: kJ mol-1
1st ionization energy: kJ mol-1
3rd ionization energy: kJ mol-1
Heat of atomization: kJ mol-1
Heat of vaporization: kJ mol-1
2nd ionization energy: kJ mol-1
Electron affinity: kJ mol-1
Heat of vaporization: kJ mol-1
2nd ionization energy: kJ mol-1
Electron affinity: kJ mol-1
Oxidation & Electrons
Shells: 2,8,18,32,32,17,1
Minimum oxidation number:
Min. common oxidation no.:
Electronegativity (Pauling Scale):
Minimum oxidation number:
Min. common oxidation no.:
Electronegativity (Pauling Scale):
Electron configuration: [Rn] 5f14 6d8 7s2
Maximum oxidation number:
Max. common oxidation no.:
Polarizability volume: Å3
Maximum oxidation number:
Max. common oxidation no.:
Polarizability volume: Å3
Reactions & Compounds
Reaction with air:
Reaction with 15 M HNO3:
Oxide(s):
Hydride(s):
Reaction with 15 M HNO3:
Oxide(s):
Hydride(s):
Reaction with 6 M HCl:
Reaction with 6 M NaOH:
Chloride(s):
Reaction with 6 M NaOH:
Chloride(s):
Radius
Atomic radius: pm
Ionic radius (2+ ion): pm
Ionic radius (2- ion): pm
Ionic radius (2+ ion): pm
Ionic radius (2- ion): pm
Ionic radius (1+ ion): pm
Ionic radius (3+ ion): pm
Ionic radius (1- ion): pm
Ionic radius (3+ ion): pm
Ionic radius (1- ion): pm
Conductivity
Thermal conductivity: W m-1 K-1
Electrical conductivity: S m-1
References
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