Chemical elements
  Praseodymium
    Isotopes
    Energy
    Production
    Application
    Chemical properties
      Praseodymium fluoride
      Praseodymium chloride
      Praseodymium oxychloride
      Praseodymium bromide
      Praseodymium iodide
      Praseodymium bromate
      Praseodymium sesquioxide
      Praseodymia
      Praseodymium hydroxide
      Praseodymium dioxide
      Praseodymium sulphide
      Praseodymium sulphate
      Praseodymium dithionate
      Praseodymium selenite
      Praseodymium selenate
      Praseodymium tungstate
      Praseodymium nitride
      Praseodymium nitrate
      Praseodymium carbide
      Praseodymium carbonate
      Praseodymium ethylsulphate
      Praseodymium acetylacetonate
      Praseodymium oxalate
    PDB 1k0z-4flb

Praseodymium hydroxide, Pr(OH)3






Praseodymium hydroxide, Pr(OH)3, may be obtained by double decomposition as a bright green, gelatinous precipitate. In the presence of hydrogen peroxide, ammonia produces with praseodymium salts a precipitate of hydrated praseodymium peroxide, Pr2O5.xH2O or (OH)2Pr.O.OH. The peroxide closely resembles the lanthanum compound in its properties.


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