Darmstadtium was first made on 9 November 1994 at the GSI Helmholtz Centre for Heavy Ion Research in Darmstadt, Germany, by a team led by Sigurd Hofmann. They fired nickel-62 nuclei at a target of lead-208 and detected a single atom of the new element with atomic number 110, identifying it by its chain of radioactive decays. Further atoms were produced in subsequent experiments, which confirmed the result. The element was named in 2003 after the city of Darmstadt, where several other superheavy elements have been discovered. It is a synthetic, highly unstable element, with its isotopes lasting at most seconds, and only a few atoms have ever been produced, so little is known of its chemical properties.
Before and after
- from 19 September 1994 to 2 April 2009Premiere of ER
- from 22 September 1994 to 6 May 2004Premiere of Friends
- 25 October 1994Operation Amanda
- 31 October 1994Establishment of Death Valley National Park
- 9 November 1994Discovery of darmstadtium
- from 9 November 1994 to 3 October 1995O. J. Simpson murder case
- from 29 November 1994 to 24 December 1994Operation Winter '94
- December 1994Operation Spider
- 5 December 1994Budapest Memorandum
More in Science & technology
- 1945Discovery of promethium
- 1950Discovery of californium
- 1952Discovery of einsteinium
- 1976Discovery of bohrium
- 29 August 1982Discovery of meitnerium
- June 2002Discovery of oganesson
The era
This moment belongs to the Contemporary world (1945 CE to today), the world since 1945. You can also browse everything in the 20th century.