home *** CD-ROM | disk | FTP | other *** search
/ CD Schooolhouse Version 10.0 / CD Schooolhouse Version 10.0.ISO / pc / dos / math / teeote / protacti.asc < prev    next >
Encoding:
Text File  |  1992-10-03  |  404 b   |  14 lines
  1.                                  PROTACTINIUM
  2. Atomic symbol - Pa
  3. Atomic weight - (231.0359)
  4. Atomic number - 91
  5. Electron configuration - 2-8-18-32-20-9-2
  6. Oxidation states - +4, +5
  7. State of matter - solid
  8. heavy metal-ductile
  9. Discovered in 1913 by Kasimir Fajans and O.H. Gîhring
  10. Boils at unknown, melts at unknown
  11.                                
  12. Notes:
  13. Protactinium is a radioactive element. 
  14.