Darmstadtium (symbol Ds, atomic number 110) is a synthetic superheavy element named after the city of Darmstadt. It is classified as a transition metal and sits in group 10, period 7 of the periodic table.
Overview
Darmstadtium is the chemical element with atomic number 110 and the symbol Ds. With a standard atomic weight of [281], it is a transition metal. In the periodic table it occupies group 10 and period 7, and under standard conditions it is normally a solid. Darmstadtium is a synthetic superheavy element named after the city of Darmstadt.
Atomic structure
An atom of Darmstadtium has 110 protons in its nucleus and, when neutral, 110 electrons arranged in the configuration [Rn] 5f14 6d8 7s2. Darmstadtium has no stable isotope; the value [281] refers to the mass number of its most stable or most commonly produced isotope.
Discovery and place in the table
Darmstadtium was discovered in 1994 by Gesellschaft für Schwerionenforschung. It follows Meitnerium (Mt) and precedes Roentgenium (Rg) in order of atomic number.
| Atomic number | 110 |
|---|---|
| Symbol | Ds |
| Atomic mass | [281] |
| Category | Transition metal |
| Group | 10 |
| Period | 7 |
| Electron configuration | [Rn] 5f14 6d8 7s2 |
| Phase at STP | Solid |
| Discovered | 1994 (Gesellschaft für Schwerionenforschung) |