Darmstadtium

Property Value
Atomic Number 110
Element Darmstadtium
Symbol Ds
Atomic Mass [281] (most stable isotope)
Number of Neutrons 171 (Darmstadtium-281)
Number of Protons 110
Number of Electrons 110
Period 7
Group 10
Phase Solid (predicted)
Radioactive Yes
Natural No (synthetic element)
Metal Yes (predicted)
Nonmetal No
Metalloid No
Type Transition Metal
Atomic Radius — (not well established)
Electronegativity — (not well established)
First Ionization Energy ~8.7 eV (estimated)
Density ~34.8 g/cm³ (estimated)
Melting Point — (not well established)
Boiling Point — (not well established)
Number of Isotopes No stable isotopes (Ds-281 most notable)
Discoverer Gesellschaft für Schwerionenforschung (GSI), Germany
Year 1994
Specific Heat — (not well established)
Number of Shells 7
Number of Valence Electrons 10