Gallium hydroxide is an inorganic compound with the chemical formula . It is formed as a gel following the addition of ammonia to salts.Anthony John Downs, (1993), Chemistry of Aluminium, Gallium, Indium, and Thallium, Springer, It is also found in nature as the rare mineral söhngeite which is reported to contain octahedrally coordinated gallium atoms. Crystal Structure of a new mineral söhngeite, J.D. Scott, The American Mineralogist, (1971), 56, 355 Gallium hydroxide is amphoteric. In strongly acidic conditions, the gallium ion, is formed. In strongly basic conditions, (tetrahydroxogallate(III)) is formed. Salts of are sometimes called gallates.
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