Darmstadtium,  ₁₁₀Ds

General properties
Pronunciation	/dɑːrmˈʃɑːiəm/ ( listen) ​(darm-SHTAH-tee-əm)
Mass number	281 (most stable isotope)
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) meitnerium ← darmstadtium → roentgenium
Atomic number (Z)	110
Group	group 10
Period	period 7
Block	d-block
Element category	unknown chemical properties, but probably a transition metal
Electron configuration	[Rn] 5f14 6d8 7s2 (predicted)
Electrons per shell	2, 8, 18, 32, 32, 16, 2 (predicted)
Physical properties
Phase at STP	Ds: Unknown phase (predicted)
Density (near r.t.)	34.8 g/cm3 (predicted)
Atomic properties
Oxidation states	(0), (+2), (+4), (+6), (+8) (predicted)
Ionization energies	1st: 960 kJ/mol 2nd: 1890 kJ/mol 3rd: 3030 kJ/mol (more) (all estimated)
Atomic radius	empirical: 132 pm (predicted)
Covalent radius	128 pm (estimated)
Other properties
Natural occurrence	Ds: Synthetic
Crystal structure	​body-centered cubic (bcc) (predicted)
CAS Number	54083-77-1
History
Naming	after Darmstadt, Germany, where it was discovered
Discovery	Gesellschaft für Schwerionenforschung (1994)
Main isotopes of darmstadtium
Iso­tope Abun­dance Half-life (1/2) Decay mode Pro­duct 279Ds syn 0.2 s 10% α 275Hs 90% SF 281Ds syn 14 s 94% SF 6% α 277Hs
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Darmstadtium is a chemical element. It has been named ununnilium (Uun) or eka-platinum but is now named darmstadtium. It has the symbol Ds. It has the atomic number 110. It is a transuranium element.

Darmstadt

The element is named in honor of German city Darmstadt.