Darmstadtium

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Atomic symbol: Ds

Atomic number: 110

Atomic weight: (272)

Atomic volume: ?

Density: ?

Period Number: 7

Group number: 10

Group name: Trans. Met.

Element classification: Metal

States

Phase at room temperature: Expected to be a Solid

Melting Point: ?

Boiling point: ?

Heat of fusion: ?

Heat of vaporization: ?

Energies

Ionization Energy: Unknown

1st ionization energy: ?

2nd ionization energy: ?

3rd ionization energy: ?

Electronegativity: ?

Electron affinity: ?

Specific heat: ?

Heat atomization: ?

Oxidation & Electrons

Shells: 2,8,18,32,32,17,1

Electron Shell Configuration: [Rn] 5f14 6d8 7s2

Minimum oxidation number: ?

Maximum oxidation number: ?

Minimum common oxidation number: ?

Maximum common oxidation no: ?

Appearance & Characteristics

Structure:: Unknown

Color: Unknown

Hardness: Unknown

Toxicity: Unknown

Characteristics: synthetically prepared

Uses: Unknown

Reactions

Reaction with air: ?

Reaction with 6M HCl: ?

Reaction with 15M HNO3: ?

Reaction with 6M NaOH: ?

Other Forms

Number of isotopes: 0

Oxide(s): ?

Hydride(s): ?

Chloride(s): ?

Radius

Atomic Radius: ?

Ionic radius (1- ion): ?

Ionic radius (1+ ion): ?

Ionic radius (2- ion): ?

Ionic radius (2+ ion): ?

Ionic radius (3+ ion): ?

Conductivity

Thermal conductivity: 0.58 W/cmK

Electrical conductivity: ?

Polarizability: ?

Abundance

Source: synthetically prepared

Relative abundance solar system: ?

Abundance earth's crust: ?

Estimated crustal abundance: Not Applicable

Estimated oceanic abundance: Not Applicable

History

November 9, 1994 at 4:39 pm, the first atom with atomic number 110 was detected at the Gesellschaft fur Schwerionenforschung (GSI) in Darmstadt, in Germany. For the last ten years, this element has been the subject of an intense search by many laboratories world-wide.

Element 110 was produced by fusing a nickel and lead atom together. This was achieved by accelerating the nickel atoms to a high energy in the heavy ion accelerator. "This rare reaction occurs only at a very specific velocity of the nickel projectile. Over a period of many days, many billion billion nickel atoms must be shot at a lead target in order to produce and identify a single atom of element 110. The atoms produced in the nickel-lead collisions are selected by a velocity filter and then captured in a detector system which measures their decay. The energy of the emitted helium nuclei serves to identify the atom" (Press Release). This element was only found to have a lifetime of less than 1/1000th of a second. It is expected that soon a heavier version of element 110 that might be more stable, and that lives slightly longer will be developed.

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