103
262.00
Lr
Lawrencium
Identification
CAS Number: 22537-19-5
Discovery Year: 1961
Discoverer: A.Ghiorso, T.Sikkeland, A.E.Larsh, R.M.Latimer
Discovery Location: United States
Properties
Atomic Dimensions
Van der Waals Radius: 246 pm
Electronic Structure
Abundance & Geochemistry
Goldschmidt Class: synthetic
About
Appearance unknown, however it is most likely silvery-white or grey and metallic. Lawrencium is a synthetic rare-earth metal. There are eight known radioisotopes, the most stable being Lr-262 with a half-life of 3.6 hours. Due to the short half-life of lawrencium, and its radioactivity, there are no known uses for it. Identified by Albert Ghiorso in 1961 at Berkeley. It was produced by bombarding californium with boron ions. The name is temporary IUPAC nomenclature, the origin of the name comes from Ernest O. Lawrence, the inventor of the cyclotron. If sufficient amounts of lawrencium were produced, it would pose a radiation hazard.
Isotopes
Lr-261 261 ☢ 39.0 min
Lr-262 262 ☢ 4.00 h
