Meitnerium was first discovered by Gottfried Münzenber and Peter Armbruster at Heavy Ion Research Laboratory in Darmstadt, Germany in 1982. They bombarded bismuth-209 atoms with iron-58 ions in a linear accelerator and produced meitnerium-266 atoms with free neutrons. The element was named after the physicist Lise Meitner, one of the pioneers of nuclear fission.
||Presumably a solid at 298 K
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||Unknown, but probably metallic and silvery white or grey in appearance
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Meitnerium does not occur naturally.
Meitnerium - Periodic Table of Videos
Meitnerium has been found to have seven isotopes with mass numbers in the range of 266Mt to 278Mt. It has no stable or naturally- occurring isotopes. However, 266Mt is the longest-lived isotope with a half-life of 8 s.
Meitnerium atoms can be produced through a nuclear reaction that involves a cold fusion of a bismuth isotope with iron ions.
209Bi + 58Fe → 266Mt + 1n
Very few quantities of meitnerium have been produced so far owing to the fact that the element decays rapidly via alpha emission.
The following are the key properties of meitnerium:
- It is a radioactive metal
- It is very unstable in air
- It is expected to have properties similar to that of other group 9 elements, iridium, cobalt and rhodium in particular.
The applications of meitnerium are currently limited to scientific research only.