Darmstadtium is a synthetic chemical element with 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 10 seconds.

Atomic Weight:  323
Density:        45 g/cm3
Melting Point:  56 °C
Boiling Point:  67 °C