Which Happened First?

Discovery of hassium

Hassium is a synthetic chemical element; it has symbol Hs and atomic number 108. It is highly radioactive: its most stable known isotopes have half-lives of about ten seconds.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Which happened first?

Timeline

  1. Discovery of seaborgiumJuly 1974
  2. Discovery of bohrium1976
  3. Discovery of meitneriumAugust 29, 1982
  4. Discovery of hassium (this page)1984
  5. Discovery of darmstadtiumNovember 9, 1994
  6. Discovery of roentgeniumDecember 8, 1994

Related

Play a round with Science · 20th century
Discovery of hassium (1984) · Which Happened First?