Rhodium(IV) oxide
# Rhodium(IV) oxide

Rhodium(IV) oxide (or rhodium dioxide) is the chemical compound with the formula $RhO_2.$

## Chemical properties

$RhO_2$ is highly insoluble even in hot aqua regia.

## Structure

$RhO_2$ has the tetragonal rutile structure.

## Physical properties

$RhO_2$ has metallic resistivity with values $<10^{−4}$ Ohm·cm. It transforms in air to $Rh_2O_3$ at 850 °C and then to metal and oxygen at 1050 °C.

