Assertion: actinium | /r/HasProperty | colourless
Facets:
value: in solution
type: OTHER
Source sentences:
text: Actinium exists in the +3 oxidation state like most actinides and its ions are colourless in solutions.
text: Actinium, the ions of which in solution are colourless, exhibits an oxidation state of +3, closely resembling the rare-earth lanthanoid elements in its chemical properties.