Meitnerium

meitnerio

Researchers think that meitnerium may be the densest of all the elements. It is very unstable, and even the atoms of its most stable isotope, or form, split apart in a matter of seconds. Meitnerium is named in honor of physicist Lise Meitner.

Summary of properties (Mt)

Atomic weight[278]
Discoverer (year)Armbruster, Paula & Muenzenberg, Dr. Gottfried (1982)
Natural formmetallic solid (-)
Electron configuration[Rn] 7s2 514 6d7
Melting point (ºC)
Boiling point (ºC)
Abundance in earth's crust (ppm)synthetic
Isotope (abundance)
Density g/cm3
Van der Waals radius (pm)
Covalent radius (pm)129
Electronegativity (Pauling)
Vaporization enthalpy (kJ/mol)-
Enthalpy of fusion (kJ/mol)-
Specific heat capacity (J/g·K) at 25ºC and 1 atm-
Thermal conductivity (W/cm·K) at 25ºC and 1 atm-
Oxidation state
Electron affinity (eV)
1st Ionization potential (eV)

Back to the Periodic Table of the Elements.