germanium monoxide

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| ImageFile = GeO,Germanium(II) monoxide.png

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| IUPACName = germanium(II) oxide

| OtherNames = germanous oxide

|Section1={{Chembox Identifiers

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| CASNo = 20619-16-3

| ChemSpiderID = 4886101

| PubChem = 6327639

| InChI = 1S/GeO/c1-2

| InChIKey = PVADDRMAFCOOPC-UHFFFAOYSA-N

| SMILES = [Ge]=O}}

|Section2={{Chembox Properties

| Formula = GeO

| MolarMass = 88.6394 g/mol

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| MagSus = −28.8·10⁻⁶ cm³/mol }}

|Section3={{Chembox Hazards

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Germanium monoxide (chemical formula 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 to 650 °C.{{Greenwood&Earnshaw}} 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.Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier {{ISBN|0-12-352651-5}}