Which Happened First?

Discovery of darmstadtium

Darmstadtium is a synthetic chemical element; it has symbol Ds and atomic number 110. It is extremely radioactive: the most stable known isotope, darmstadtium-281, has a half-life of approximately 14 seconds.

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Which happened first?

Timeline

  1. Discovery of darmstadtium (this page)November 9, 1994
  2. Discovery of roentgeniumDecember 8, 1994
  3. Discovery of copernicium1996
  4. Discovery of fleroviumJanuary 1999
  5. Discovery of livermoriumJuly 2000
  6. Discovery of oganessonJune 2002

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