Periodic Table of Elements

Element Promethium - Pm

Comprehensive data on the chemical element Promethium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Promethium. Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies.

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Overview of Promethium

Promethium's Name in Other Languages

  • Latin: Promethium
  • Czech: Promethium
  • Croatian: Prometij
  • French: Promethium
  • German: Promethium - s
  • Italian: Prometio
  • Norwegian: Promethium
  • Portuguese: Promécio
  • Russian: Прометий
  • Spanish: Promécio
  • Swedish: Prometium

Atomic Structure of Promethium

Chemical Properties of Promethium

Physical Properties of Promethium

Regulatory / Health

  • CAS Number
    • 7440-12-2
  • NFPA 704
    • Health:
    • Fire:
    • Reactivity:
    • Special Hazard: Radioactive<
    • OSHA Permissible Exposure Limit (PEL)
      • No limits set by OSHA
    • OSHA PEL Vacated 1989
      • No limits set by OSHA
    • NIOSH Recommended Exposure Limit (REL)
      • No limits set by NIOSH
    • Levels In Humans:
      Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances.
      • Blood/mg dm-3: nil
      • Bone/p.p.m: nil
      • Liver/p.p.m: nil
      • Muscle/p.p.m: nil
      • Daily Dietary Intake: nil
      • Total Mass In Avg. 70kg human: nil

    Who / Where / When / How

    • Discoverer: J.A. Marinsky, L.E. Glendenin, C.D. Coryell
    • Discovery Location: Oak Ridge Tennessee United States
    • Discovery Year: 1945
    • Name Origin:
      From Prometheus who stole the fire of the sky and gave it to mankind.
    • Abundance of Promethium:
      • Earth's Crust/p.p.m.: N/A
      • Seawater/p.p.m.: nil
      • Atmosphere/p.p.m.: N/A
      • Sun (Relative to H=1E12): N/A
    • Sources of Promethium:
      All the promethium originally present when the Earth formed has disappeared due to radioactive decay. Only very small trace amounts are found in uranium ores as a fission product. Found among fission products of uranium, thorium, and plutonium. All commercially used promethium comes from nuclear reactors.
    • Uses of Promethium:
      Used in highly specialized miniature batteries (e.g. in satellites).
    • Additional Notes:
      Promethium is never normally encountered beyond a laboratory or the nuclear industry.

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