Tags: Chemical Compound, Chemical Substance.
Germanium monoxide GeO is a chemical compound of germanium and oxygen. It can be prepared as a yellow sublimate at 1000°C by reacting GeO2 with Ge metal. The yellow sublimate turns brown on heating at 650°C. GeO is not well characterised. It is amphoteric dissolving in acids to form germanium(II) salts and in alkali to form trihydroxogermanates or germanites containing the Ge(OH)3− ion.