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Text File  |  1992-09-02  |  245b  |  8 lines
  1. Rare radioactive element, atomic number 89,
  2. relative atomic mass of most stable isotope
  3. 227; the first of the actinide series and a
  4. weak emitter of high-energy alpha-rays. It is
  5. made by bombarding radium with neutrons.
  6.  
  7. Subject by: Russell Webb
  8.