Chemical elements
    Physical Properties
    Chemical Properties
      Germanium Hydride
      Germanium Tetra-ethyl
      Germanium Chloroform
      Germanous Fluoride
      Germanic Fluoride
      Hydrofluogermanic Acid
      Potassium Germanifluoride
      Germanous Chloride
      Germanic Chloride
      Germanium Oxychloride
      Germanic Bromide
      Germanic Iodide
      Germanous Oxide
      Germanous Hydroxide
      Germanic Oxide
      Germanous Sulphide
      Germanic Sulphide
      Germanium Ultramarine

Germanous Fluoride, GeF2

Germanous Fluoride, GeF2, is formed as a dark-coloured mass, mixed with metallic germanium, when potassium germanifluoride, K2GeF6, is heated in a current of hydrogen. The presence of the lower fluoride is shown by the formation of the brown monosulphide, GeS, when hydrogen sulphide is passed through the aqueous extract of the product.

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