Chemical elements
  Neodymium
    Isotopes
    Energy
    Production
    Application
    Chemical properties
      Neodymium fluoride
      Neodymium chloride
      Neodymium oxychloride
      Neodymium bromide
      Neodymium iodide
      Neodymium bromate
      Neodymium sesquioxide
      Neodymia
      Neodymium hydroxide
      Neodymium sulphide
      Neodymium sulphate
      Neodymium tungstate
      Neodymium uranate
      Neodymium nitrate
      Neodymium carbide
      Neodymium carbonate
      Neodymium ethylsulphate
      Neodymium acetylacetonate
      Neodymium oxalate

Chemical properties of Neodymium





Compounds of Neodymium

The salts of neodymium are rose-red or reddish-violet in colour, and the absorption spectra of their aqueous solutions show characteristic absorption bands. The following equivalent conductivity determinations (λ), effected at 25°, show that the salts are derived from a fairly strong triacid base (v = dilution in litres per gram equivalent): -

NdCl3v=29.2858.56117.12234.24468.48936.96
λ=103.0110.9118.85124.1128.7133.4
Nd2(SO4)3v=33.4766.94133.88267.76535.521071.04
λ=40.6148.1547.12(?)62.2380.2195.95
Nd(C2H3O2)3v=33.8167.62135.24270.48540.961081.92
λ=42.4350.2858.5567.6676.8186.89


Thermochemistry of Neodymium

The following results have been recorded: -

2[Nd] + 3(O) = [Nd2O3] + 435.1 Cals
2[Nd] + 3[S] = [Nd2S3] + 285.9 Cals
[Nd] + 3(Cl) = [NdCl3] + 249.5 Cals
[Nd] + 3[I] = [NdI3] + 157.7 Cals
2[Nd] + 3[S] + 6(O2) = [Nd2(SO4)] + 928.2 Cals
2[Nd] + 3[S] + 6(O2) + 8[H2O] = [Nd2(SO4)3.8H2O] + 946.8 Cals
NdCl3] + Aq. = NdCl3aq + 35.4 Cals
[NdCl3.6H2O] + Aq. = NdCl3aq. + 7.6 Cals
[NdI3] + Aq. = NdI3aq + 48.9 Cals
[Nd2(SO4)3] + Aq. = Nd2(SO4)3aq + 36.5 Cals
[Nd2(SO4)3.5H2O] + Aq. = Nd2(SO4)3aq + 8.3 Cals
[Nd2(SO4)3.8H2O] + Aq. = Nd2(SO4)3aq + 6.7 Cals
[NdCl3] + alcohol = NdCl3 in alc. soln. + 21.5 Cals
[Nd2O3] + 6HClaq. = 2NdCl3aq. + 3H2O + 105.5 Cals
[Nd2O3] + 6HIaq. = 2NdI3aq. + 3H2O + 106.1 Cals
[Nd2O3] + 3[H2SO4] = [Nd2(SO4)3] + 3H2O + 125.1 Cals
[Nd2O3] + 3H2SO4aq. = Nd2(SO4)3aq. + 3H2O + 106.4 Cals
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