Ramuel Mendoza Raagas chemistry E-1b
    1. The melting point is 60. The boiling point is 120
  1. Putris na calcium Fluoride http://www.chm.davidson.edu/ChemistryApplets/Crystals/IonicSolids/Fluorite.html http://www.corning.com/media_center/press_releases/2002/2002121417481120934.asp http://mineral.galleries.com/minerals/halides/fluorite/fluorite.htm
  2. Born-Haber cycle http://onsager.bd.psu.edu/~jircitano/BH.html