Periodic Table of Elements

Element Radium - Ra

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

Radium's Name in Other Languages

  • Latin: Radium
  • Czech: Radium
  • Croatian: Radij
  • French: Radium
  • German: Radium - s
  • Italian: Radio
  • Norwegian: Radium
  • Portuguese: Rádio
  • Russian: Радий
  • Spanish: Radio
  • Swedish: Radium

Atomic Structure of Radium

Chemical Properties of Radium

Physical Properties of Radium

Regulatory / Health

  • CAS Number
    • 7440-14-4
  • 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: n/a
      • Bone/p.p.m: n/a
      • Liver/p.p.m: n/a
      • Muscle/p.p.m: n/a
      • Daily Dietary Intake: n/a
      • Total Mass In Avg. 70kg human: n/a

    Who / Where / When / How

    • Discoverer: Pierre and Marie Curie
    • Discovery Location: Paris France
    • Discovery Year: 1898
    • Name Origin:
      Latin: radius (ray).
    • Abundance of Radium:
      • Earth's Crust/p.p.m.: N/A
      • Seawater/p.p.m.: 2E-11
      • Atmosphere/p.p.m.: N/A
      • Sun (Relative to H=1E12): N/A
    • Sources of Radium:
      Found in uranium ores at 1 part per 3 million parts uranium. Very little radium is commercial produced.
    • Uses of Radium:
      Used to be used in treating cancer because of the gamma rays it gives off and to produce luminous paints, but these uses are not common any longer.
    • Additional Notes:

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    A list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.

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