Atomic mass, symbol and atomic number
Meitnerium is an artificially created element with the element symbol Mt and atomic number 109. In the periodic table, it belongs to the transactinoids with an atomic mass of 268 u. The chemical element discovered in 1982 is radioactive and is in a solid state of aggregation at room temperature.
Wanted poster: Meitnerium (English Meitnerium)
|explorers:||Society for Heavy Ion Research (GSI) - Darmstadt|
|Year of discovery:||1982|
|Atomic mass:||268 u|
|Atomic radius:||122 pm|
|Covalent radius:||129 pm|
|Van der Waals radius:||unknown|
|Electron configuration:||Rn 5f14 6d7 7s2|
|Heat of fusion:||unknown|
|Heat of vaporization:||unknown|
Did you know that ...
- Meitnerium was named after the atomic physicist Lise Meitner, who was not involved in the discovery of the element itself?
- the item was named Unnilennium until its definitive discovery?
- Meitnerium belongs to the transactinoids?