Pm

PROMETHIUM

Definition after 'promethius', a demigod in greek myth, the only rare earth metal that has never been found on nature.

Discovery 1945 by Lawrence Glendenin of USA

Uses Nuclear powered battery, x-ray source

Group of Elements Lanthanide(Solid)

Atomic Weight (145)

Oxidation State +3

Melting Point 1080

Boiling Point 2460

Density 7.22 g/cm3