Darmstadtium

  • darmstadtium, 110ds
    darmstadtium
    pronunciationt-/ (about this soundlisten)[1][2] (s(h)tat-ee-əm)
    mass number[281]
    darmstadtium in the periodic table
    hydrogen helium
    lithium beryllium boron carbon nitrogen oxygen fluorine neon
    sodium magnesium aluminium silicon phosphorus sulfur chlorine argon
    potassium calcium scandium titanium vanadium chromium manganese iron cobalt nickel copper zinc gallium germanium arsenic selenium bromine krypton
    rubidium strontium yttrium zirconium niobium molybdenum technetium ruthenium rhodium palladium silver cadmium indium tin antimony tellurium iodine xenon
    caesium barium lanthanum cerium praseodymium neodymium promethium samarium europium gadolinium terbium dysprosium holmium erbium thulium ytterbium lutetium hafnium tantalum tungsten rhenium osmium iridium platinum gold mercury (element) thallium lead bismuth polonium astatine radon
    francium radium actinium thorium protactinium uranium neptunium plutonium americium curium berkelium californium einsteinium fermium mendelevium nobelium lawrencium rutherfordium dubnium seaborgium bohrium hassium meitnerium darmstadtium roentgenium copernicium nihonium flerovium moscovium livermorium tennessine oganesson
    pt

    ds

    (uhq)
    meitneriumdarmstadtiumroentgenium
    atomic number (z)110
    groupgroup 10
    periodperiod 7
    blockd-block
    element category  unknown chemical properties, but probably a transition metal
    electron configuration[rn] 5f14 6d8 7s2 (predicted)[3]
    electrons per shell2, 8, 18, 32, 32, 16, 2 (predicted)[3]
    physical properties
    phase at stpsolid (predicted)[4]
    density (near r.t.)34.8 g/cm3 (predicted)[3]
    atomic properties
    oxidation states(0), (+2), (+4), (+6), (+8) (predicted)[3][5]
    ionization energies
    • 1st: 960 kj/mol
    • 2nd: 1890 kj/mol
    • 3rd: 3030 kj/mol
    • (more) (all estimated)[3]
    atomic radiusempirical: 132 pm (predicted)[3][5]
    covalent radius128 pm (estimated)[6]
    other properties
    natural occurrencesynthetic
    crystal structurebody-centered cubic (bcc)
    body-centered cubic crystal structure for darmstadtium

    (predicted)[4]
    cas number54083-77-1
    history
    namingafter darmstadt, germany, where it was discovered
    discoverygesellschaft für schwerionenforschung (1994)
    main isotopes of darmstadtium
    iso­tope abun­dance half-life (t1/2) decay mode pro­duct
    279ds syn 0.2 s 10% α 275hs
    90% sf
    281ds syn 14 s 94% sf
    6% α 277hs
    | references

    darmstadtium is a chemical element with the symbol ds and atomic number 110. it is an extremely radioactive synthetic element. the most stable known isotope, darmstadtium-281, has a half-life of approximately 12.7 seconds. darmstadtium was first created in 1994 by the gsi helmholtz centre for heavy ion research near the city of darmstadt, germany, after which it was named.

    in the periodic table, it is a d-block transactinide element. it is a member of the 7th period and is placed in the group 10 elements, although no chemical experiments have yet been carried out to confirm that it behaves as the heavier homologue to platinum in group 10 as the eighth member of the 6d series of transition metals. darmstadtium is calculated to have similar properties to its lighter homologues, nickel, palladium, and platinum.

  • history
  • isotopes
  • predicted properties
  • experimental chemistry
  • see also
  • notes
  • references
  • external links

Darmstadtium, 110Ds
Darmstadtium
Pronunciationt-/ (About this soundlisten)[1][2] (S(H)TAT-ee-əm)
Mass number[281]
Darmstadtium in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Pt

Ds

(Uhq)
meitneriumdarmstadtiumroentgenium
Atomic number (Z)110
Groupgroup 10
Periodperiod 7
Blockd-block
Element category  Unknown chemical properties, but probably a transition metal
Electron configuration[Rn] 5f14 6d8 7s2 (predicted)[3]
Electrons per shell2, 8, 18, 32, 32, 16, 2 (predicted)[3]
Physical properties
Phase at STPsolid (predicted)[4]
Density (near r.t.)34.8 g/cm3 (predicted)[3]
Atomic properties
Oxidation states(0), (+2), (+4), (+6), (+8) (predicted)[3][5]
Ionization energies
  • 1st: 960 kJ/mol
  • 2nd: 1890 kJ/mol
  • 3rd: 3030 kJ/mol
  • (more) (all estimated)[3]
Atomic radiusempirical: 132 pm (predicted)[3][5]
Covalent radius128 pm (estimated)[6]
Other properties
Natural occurrencesynthetic
Crystal structurebody-centered cubic (bcc)
Body-centered cubic crystal structure for darmstadtium

(predicted)[4]
CAS Number54083-77-1
History
Namingafter Darmstadt, Germany, where it was discovered
DiscoveryGesellschaft für Schwerionenforschung (1994)
Main isotopes of darmstadtium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
279Ds syn 0.2 s 10% α 275Hs
90% SF
281Ds syn 14 s 94% SF
6% α 277Hs
| references

Darmstadtium is a chemical element with the symbol Ds and atomic number 110. It is an extremely radioactive synthetic element. The most stable known isotope, darmstadtium-281, has a half-life of approximately 12.7 seconds. Darmstadtium was first created in 1994 by the GSI Helmholtz Centre for Heavy Ion Research near the city of Darmstadt, Germany, after which it was named.

In the periodic table, it is a d-block transactinide element. It is a member of the 7th period and is placed in the group 10 elements, although no chemical experiments have yet been carried out to confirm that it behaves as the heavier homologue to platinum in group 10 as the eighth member of the 6d series of transition metals. Darmstadtium is calculated to have similar properties to its lighter homologues, nickel, palladium, and platinum.