working to make science better For the 118 indvidual WIS elements, GO to MORE in the menu above . . .
Meitnerium Mt
Where is meitnerium used--or where does it impact your everyday life?
Meitnerium is a synthetic element--made in very small quantities
Meitnerium
Atomic number: 109
Atomic mass: 276
A synthesized transuranium element—only very small quantities prepared
Position in the Periodic Table: the 7th period in the group 9 elements
Melting point: unknown
Boiling point: unknown
Density: unknown
Most stable isotope: meitnerium-278 with a half-life of 8 seconds
Other isotopes: 266Mt, 268Mt, 270Mt, 274Mt, 275Mt, 276Mt, 277Mt, 278Mt
Electron configuration: element 109 is: [Rn] 7s2 5f14 6d7
Named after the Austrian physicist Lise Meitner who also discovered the element, protactinium, Pa.
Made by German physicists led by Peter Armbruster and Gottfried Münzenber by bombarding a target of 209Bi with accelerated nuclei of 58Fe
nuclear reaction equation: 209Bi + 58Fe --> 266Mt + n
Made at the Heavy Ion Research Laboratory in Darmstadt, West Germany
Used for scientific research only
Hazard: radioactive
Researcher: Rhya E
Sources: LANL.gov nndc.bnl.gov
The flask with the symbol for meitnerium was photographed at the Corning Glass Museum in Corning, New York, USA which was part of a Periodic Table--the back of the whole table is shown
WIS Photographer
