Assertion: iridium | /r/HasProperty | a transition metal
Facets:
Source sentences:
text: It is a transition metal that’s related to platinum, so it qualifies in some circles as a precious metal.
text: Iridium is one of 31 transitional metals and one of a handful of precious metals along with gold, silver, platinum and palladium.
text: Like other metals in the platinum group, Iridium is a rare and expensive "noble metal" and is a transition metal.