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About Darmstadtium

Darmstadtium Bohr

Darmstadtium is a super-heavy radioactive element that does not exist in nature and breaks down in a matter of milliseconds following synthesis. Before it was synthesized, the element held the temporary name ununnilium (Uun). In 1994, the isotope 269Ds was conclusively synthesized at the GSI in Darmstadt, Germany by pelting a lead target with nickel ions for several days. The GSI team proposed naming it in honor of the city of Darmstadt, and the IUPAC accepted their proposal. Much remains unknown about darmstadtium due to its extreme instability, and it has no known commercial uses.

Darmstadtium Properties

Darmstadtium Bohr ModelDarmstadtium is a D-Block, Group 10, Period 7 element. The number of electrons in each of Darmstadtium's shells is 2, 8, 18, 32, 32, 17, 1 and its electron configuration is [Rn]7s15f146d9. In its elemental form, Darmstadtium's CAS number is 54083-77-1. Made by fusing nickel atoms and lead atoms, Darmstadtium was first synthesized in 1994 at the Institute for Heavy Ion Research (Gesellschaft für Schwerionenforschung (GSI)) in Darmstadt, Germany by Peter Armbruster and Gottfried Münzenberg, under the direction of professor Sigurd Hofmann. Darmstadtium is a synthetic element that is not present in the environment. Little is known about the element, its appearance is unknown, and it has no known uses. Darmstadtium was named after the city of Darmstadt, where it was discovered.

Darmstadtium information, including technical data, properties, and other useful facts are specified below. Scientific facts such as the atomic structure, ionization energy, abundance on Earth, conductivity, and thermal properties are included.

General Properties
Symbol: Ds
Atomic Number: 110
Atomic Weight: 281
Element Category: transition metal
Group, Period, Block: 10, 7, d
Color: unknown (presumably metallic/ silvery white/ gray)
Other Names: Darmstadtio
Physical Properties
Melting Point: N/A
Boiling Point: N/A
Density: 34.8 (predicted)
Liquid Density @ Melting Point: N/A
Density @ 20°C: N/A
Density of Solid: 27400 (predicted) kg·m3
Specific Heat: N/A
Superconductivity Temperature: N/A
Triple Point: N/A
Critical Point: N/A
Heat of Fusion (kJ·mol-1): N/A
Heat of Vaporization (kJ·mol-1): N/A
Heat of Atomization (kJ·mol-1): N/A
Thermal Conductivity: N/A
Thermal Expansion: N/A
Electrical Resistivity: N/A
Tensile Strength: N/A
Molar Heat Capacity: N/A
Young's Modulus: N/A
Shear Modulus: N/A
Bulk Modulus: N/A
Poisson Ratio: N/A
Mohs Hardness: N/A
Vickers Hardness: N/A
Brinell Hardness: N/A
Speed of Sound: N/A
Pauling Electronegativity: N/A
Sanderson Electronegativity: N/A
Allred Rochow Electronegativity: N/A
Mulliken-Jaffe Electronegativity: N/A
Allen Electronegativity: N/A
Pauling Electropositivity: N/A
Reflectivity (%): N/A
Refractive Index: N/A
Chemical Properties
Electrons: 110
Protons: 110
Neutrons: 159
Electron Configuration: [Rn]7s15f146d9
Atomic Radius: 118 pm (predicted)
Atomic Radius,
non-bonded (Å):		 Unknown
Covalent Radius: 128 pm (predicted)
Covalent Radius (Å): 1.28
Van der Waals Radius: N/A
Oxidation States: 8, 6, 4, 2, 0 (predicted)
Phase: Solid (predicted)
Crystal Structure: unknown
Magnetic Ordering: unknown
Electron Affinity (kJ·mol-1) Unknown
1st Ionization Energy: 955.2 kJ·mol-1 (estimated)
2nd Ionization Energy: 1891.1 kJ·mol-1 (estimated)
3rd Ionization Energy: 3029.6 kJ·mol-1 (estimated)
Identifiers
CAS Number: 54083-77-1
EC Number: N/A
MDL Number: N/A
Beilstein Number: N/A
SMILES Identifier: N/A
InChI Identifier: N/A
InChI Key: N/A
PubChem CID: N/A
ChemSpider ID: N/A
Abundance
Earth - Total: N/A
Mercury - Total: N/A
Venus - Total: N/A
Earth - Seawater (Oceans), ppb by weight: N/A
Earth - Seawater (Oceans), ppb by atoms: N/A
Earth -  Crust (Crustal Rocks), ppb by weight: N/A
Earth -  Crust (Crustal Rocks), ppb by atoms: N/A
Sun - Total, ppb by weight: N/A
Sun - Total, ppb by atoms: N/A
Stream, ppb by weight: N/A
Stream, ppb by atoms: N/A
Meterorite (Carbonaceous), ppb by weight: N/A
Meterorite (Carbonaceous), ppb by atoms: N/A
Typical Human Body, ppb by weight: N/A
Typical Human Body, ppb by atom: N/A
Universe, ppb by weight: N/A
Universe, ppb by atom: N/A
History
Discovered By: Peter Armbruster, Gottfried Münzenberg, Sigurd Hofmann
Discovery Date: 1994
First Isolation: N/A

Darmstadtium Isotopes

Darmstadtium (Ds) is an artificial element. Like all artificial elements, it has no stable isotopes.

Nuclide Isotopic Mass Half-Life Mode of Decay Nuclear Spin Magnetic Moment Binding Energy (MeV) Natural Abundance
(% by atom)
267Ds 267.14434(39)# 3(+6-2) µs a to 263Hs 9/2+# N/A 1903.16 -
268Ds 268.14380(54)# 100# µs - 0+ N/A 1911.24 -
269Ds 269.14512(15)# 230(110) µs [179(+245-66) µs] a to 265Hs 3/2+# N/A 1919.32 -
270Ds 270.14472(31)# 160(100) µs [0.10(+14-4) ms] a to 266Hs 0+ N/A 1927.4 -
271Ds 271.14606(11)# 210(170) ms a to 267Hs 11/2-# N/A 1935.47 -
272Ds 272.14632(70)# 1# s SF 0+ N/A 1943.55 -
273Ds 273.14886(14)# 0.17(+17-6) ms a to 269Hs 13/2-# N/A 1951.63 -
274Ds 274.14949(53)# 2# s Unknown 0+ N/A 1959.71 -
275Ds 275.15218(48)# 2# s Unknown N/A N/A 1958.47 -
276Ds 276.15303(65)# 5# s Unknown 0+ N/A 1966.55 -
277Ds 277.15565(104)# 5# s a to 273Hs 11/2+# N/A 1974.63 -
278Ds 278.15647(73)# 10# s Unknown 0+ N/A 1982.71 -
279Ds 279.15886(80)# 0.18(+5-3) s SF; a to 275Hs N/A N/A 1990.79 -
280Ds 280.15980(91)# 11(6) s SF; a to 276Hs 0+ N/A 1998.87 -
281Ds 281.16206(78)# 9.6 s a to 277Hs 3/2+# N/A 1997.63 -