Periodic Table of Elements

Element Technetium - Tc

Comprehensive data on the chemical element Technetium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Technetium. 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 Technetium

Technetium's Name in Other Languages

  • Latin: Technetium
  • Czech: Technecium
  • Croatian: Tehnecij
  • French: Technetium
  • German: Technetium - s
  • Italian: Tecneto
  • Norwegian: Technetium
  • Portuguese: Tecnécio
  • Russian: Технеций
  • Spanish: Tecnecio
  • Swedish: Teknetium

Atomic Structure of Technetium

Chemical Properties of Technetium

Physical Properties of Technetium

Regulatory / Health

  • CAS Number
    • 7440-26-8
  • 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: Carlo Perrier, Emillo G. Segre
    • Discovery Location: Palermo Italy (Sicily)
    • Discovery Year: 1937
    • Name Origin:
      Greek: technêtos (artificial).
    • Abundance of Technetium:
      • 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 Technetium:
      Made first by bombarding molybdenum with deuterons (heavy hydrogen) in a cyclotron. Produced in kilogram quantities.
    • Uses of Technetium:
      Radiation source for medical research.
    • Additional Notes:
      Technetium has never been found on Earth dispite extensive searches. It has, however, been detected in the spectra of stars other than the sun.

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