Darmstadtium (Ds)

Isotopes of Darmstadtium 

Isotope Atomic Mass Half-life Mode of Decay Nuclear Spin Nuclear Magnetic Moment
Ds-267 267.1440 3 x 10-6 seconds α to Hs-263 No data available  No data available 
Ds-268 268.1435 No data available  No data available  No data available  No data available 
Ds-269 269.1451 0.00017 seconds α to Hs-265 No data available  No data available 
Ds-270 270.1446 No data available  No data available  No data available  No data available 
Ds-271 271.1461 0.0011 seconds α to Hs-267 No data available  No data available 
Ds-272 272.1463 0.00086 seconds SF 0 No data available 
Ds-273 273.1492 0.00018 seconds α to Hs-269 No data available  No data available 
Ds-280 280 7.60 seconds SF No data available  No data available 
Ds-281 281 1.10 minutes α to Hs-277 No data available  No data available 

Ds

Darmstadtium was discovered in 1994 by Peter Armbruster and Gottfried Münzenberg, under the direction of Sigurd Hofmann, at the Gesellschaft für Schwerionenforschung (GSI) (Institute for Heavy Ion Research) in Darmstadt, Germany. Its name is derived from Darmstadt, the place of its discovery. The new element was produced by fusing a nickel atom and a lead atom together. Over a period of many days, many billions of nickel atoms were fired at a lead target in order to produce and identify a single atom of darmstadtium.

Darmstadtium is a synthetic element (an element that can be created in a laboratory but is not found in nature) in the same group as nickel, palladium and platinum. It is calculated to have similar properties to these lighter homologues, but unlike them, darmstadtium decays after a small fraction of a thousandth of a second into lighter elements by emitting α-particles which are the nuclei of helium atoms. Due to the short half-lives of its isotopes (and the resulting difficulty in obtaining statistically significant results), experimental chemistry of darmstadtium has not received as much attention as that of the heavier elements copernicium and flerovium.

Properties of Darmstadtium

Name Darmstadtium
Symbol Ds
Atomic number 110
Atomic weight [281]
Standard state Presumably a solid at 298 °K
CAS Registry ID 54083-77-1
Group in periodic table 10
Group name None
Period in periodic table 7
Block in periodic table d-block
Color Unknown, but probably metallic and silvery white or grey in appearance
Classification Metallic
Melting point No data available
Boiling point No data available
Density of solid 27.4 g/cm3 (predicted)
Electron configuration [Rn]5f146d87s2

 

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