Lawrencium

lawrencio laurencio

The element lawrentium is named after the American scientist Ernest Lawrence, who developed the first cyclotron particle accelerator. In such an accelerator, parts of atoms are joined together by spinning them in circles. The lawrentium atoms were produced in a cyclotron by colliding boron atoms with californium atoms.

Summary of properties (Lr)

Atomic weight[262]
Discoverer (year)Ghiorso, Albert (1961)
Natural formmetallic solid (-)
Electron configuration[Rn] 514 7s2 7p1
Melting point (ºC)1627
Boiling point (ºC)
Abundance in earth's crust (ppm)synthetic
Isotope (abundance)
Density g/cm3
Van der Waals radius (pm)246
Covalent radius (pm)161
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
Electron affinity (eV)
1st Ionization potential (eV)4.9600

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