promethium [Pm]

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^[1]^[2]

Introduction

Also see lanthanide. 1948^[1]

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

Additional terms

periodic table

References

↑ ^{Jump up to: 1.0} ^1.1 Webster's Ninth New Collegiate Dictionary, Miriam- Webster Inc. Springfield, MA 1990
↑ Chemical & Engineering News, Sept 8, 2003

Database

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

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