promethium [Pm]

Introduction

Also see lanthanide. 1948

Occurrence

• obtained as the fission product of uranium or from neutron- irradiated neodymium

Characteristics

• radioactive metallic element of the rare-earth group

More general terms

• lanthanide (rare earth metal)
• radioactive element

Additional terms

• periodic table

Database

• PubChem: http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=23944