Discovery of meitnerium
Meitnerium is a synthetic chemical element; it has symbol Mt and atomic number 109. It is an extremely radioactive synthetic element. The most stable known isotope, meitnerium-278, has a half-life of 4.5 seconds, although the unconfirmed meitnerium-282 may have a longer half-life of 67 seconds.
Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)
Which happened first?
- Discovery of meitnerium happened 2 years before Discovery of hassium
- Discovery of meitnerium happened 6 years after Discovery of bohrium
- Discovery of meitnerium happened 8 years after Discovery of seaborgium
- Discovery of meitnerium happened 12 years after Discovery of dubnium
- Discovery of meitnerium happened 12 years before Discovery of darmstadtium
Timeline
- Discovery of dubniumFebruary 18, 1970
- Discovery of seaborgiumJuly 1974
- Discovery of bohrium1976
- Discovery of meitnerium (this page)August 29, 1982
- Discovery of hassium1984
- Discovery of darmstadtiumNovember 9, 1994
