Germanium(II) oxide

Germanium monoxide

Names
IUPAC name germanium(II) oxide
Other names germanous oxide germanous acid
Identifiers
CAS Number	20619-16-3 Y
ECHA InfoCard	100.039.914
PubChem CID	6327639
Properties
Chemical formula	GeO
Molar mass	88.6394 g/mol
Magnetic susceptibility (χ)	−28.8·10−6 cm3/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YN ?)
Infobox references

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.

Germanium oxide decomposes to Ge and GeO₂.