Lawrencium

Lawrencium (Lr)

Atomic Number: 103
Atomic Weight: (257)
Melting Point: not known
Boiling Point: not known
Specific Gravity: not known
Valences: 3
Lawrencium was discovered in 1961 by Ghiorso and co-workers in California. The most stable form of lawrencium has a half life of only thirty-five seconds. It is the last member of the actinide series to be discovered. Few applications of this element and its compounds are known. It is named after Ernest O. Lawrence, who invented the cyclotron. [LM] {RW}