Assertion: iridium | /r/HasProperty | ir
Facets:
Source sentences:
text: Iridium (Ir), chemical element, one of the platinum metals of Groups 8–10 (VIIIb), Periods 5 and 6, of the periodic table.
text: Four elements that have been prolific in the early discussions are Rhodium (Rh), Silver (Ag), Iridium (Ir), and Gold (Au).
text: Iridium (Ir): If iridium sounds familiar, that might be because there’s a group of communications satellites named after this element, a hard, brittle and dense metal.