Nobelium

nobelio

This artificial metal is named after the Swedish chemist Alfred Nobel, who in his will established the Nobel Prizes. It was discovered in 1963 by a team of scientists working in California, USA. This team included Albert Ghiorso, Torbjørn Sikkeland and John R. Walton. They used a particle accelerator to collide carbon atoms with curium atoms, creating nobelium atoms, which disintegrated within minutes.

Summary of properties (No)

Atomic weight[259]
Discoverer (year)Seaborg, Glenn T. (1958)
Natural formmetallic solid (-)
Electron configuration[Rn] 514 s2
Melting point (ºC)827
Boiling point (ºC)
Abundance in earth's crust (ppm)synthetic
Isotope (abundance)
Density g/cm3
Van der Waals radius (pm)246
Covalent radius (pm)176
Electronegativity (Pauling)1.3
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+3, +2
Electron affinity (eV)
1st Ionization potential (eV)6.6500

Back to the Periodic Table of the Elements.