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Meitnerium (Mt) - Properties


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)

General
Chemical element:Meitnerium
Symbol:Mt
Atomic number:109
Group:cobalt group
Period:7
Block:d-block
Series:unknown
Appearance:unknown
explorers:Society for Heavy Ion Research (GSI) - Darmstadt
Year of discovery:1982
Atomic properties
Atomic mass:268 u
Atomic radius:122 pm
Covalent radius:129 pm
Van der Waals radius:unknown
Electron configuration:Rn 5f14 6d7 7s2
ionization:unknown
Physical Properties
Physical state:firmly
Density:???
Crystal structure:cubic
Magnetism:paramagnetic
molar volume:unknown
Mohs hardness:unknown
Melting point:unknown
Boiling point:unknown
Heat of fusion:unknown
Heat of vaporization:unknown
Thermal conductivity:unknown
Chemical properties
electronegativity: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?