Assertion: iridium | /r/HasProperty | insoluble
Facets:
value: in aqua regia
type: LOCATION
value: in acids
type: OTHER
Source sentences:
text: Iridium is insoluble in acids and even aqua regia, but soluble in aqueous salts such as NaCl, and NaCN.
text: Osmium, ruthenium, rhodium, and iridium are insoluble in aqua regia and readily precipitate, leaving the other metals in solution.