3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||134.904 g/mol|
|Appearance||black crystalline solid|
|Melting point||1,050 °C (1,920 °F; 1,320 K) (decomposes)|
|Solubility||insoluble in aqua regia|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
(what is ?)
Rhodium(IV) oxide (or rhodium dioxide) is the chemical compound with the formula RhO2.
RhO2 is highly insoluble even in hot aqua regia.
RhO2 has the tetragonal rutile structure.
RhO2 has metallic resistivity with values <10−4 Ohm·cm. It transforms in air to Rh2O3 at 850 °C and then to metal and oxygen at 1050 °C.