Rutherfordium was the first superheavy element to be discovered. In this type of element, each atom has 104 or more protons in its nucleus. It is named after the scientist Ernest Rutherford, who, in 1913, suggested an atomic model in which each atom has a nucleus. Pure Rutherfordium is not found in nature, and is obtained artificially in laboratories.

Summary of properties (Rf)

Atomic weight[267]
Discoverer (year)Flerow, Iwan or Ghiorso, Albert (1964)
Natural formmetallic solid (-)
Electron configuration[Rn] 514 6d2 7s2
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)157
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+4
Electron affinity (eV)
1st Ionization potential (eV)6.0000

Back to the Periodic Table of the Elements.