Lawrencium was first synthesized by the nuclear-physics team of Albert Ghiorso, Torbjørn Sikkeland, Almon Larsh, Robert M. Latimer, and their co-workers on February 14, 1961, at the Lawrence Radiation Laboratory at the University of California.
Name: Lawrencium
Symbol: Lr
Atomic number: 103
Atomic weight: 262.11
State: solid
Group, period, block: n/a, 7, f
Color: unknown
Classification: actinide
Electron configuration: 7s2 5f14 7p1
2,8,18,32,32,8,3
Physical properties
Density: no data
Melting point: no data
Boiling point: no data
Atomic properties
Oxidation states: 3
Electronegativity: no data
Ionization energies: 1st: 443.8 kJ·mol-1
Covalent radius: no data
Van der Waals radius: no data
- Lr
Electron Configuration
Isotopes
Lawrencium has no stable isotopes. The first isotope to be synthesized was 258Lr in 1961.