Assertion: protactinium | /r/HasProperty | dense and silvery-gray
Facets:
value: as a metal
type: OTHER
value: with a
type: OTHER
value: with a bright metallic luster
type: OTHER
Source sentences:
text: As a metal, protactinium is dense and silvery-gray with a bright metallic luster, which it retains for some time in air.
text: Protactinium is dense silver grey metal.
text: As a metal, protactinium is dense and silvery-gray with a When in compound form, protactinium is most stable in oxidation state +5, though it also..