Assertion: actinium | /r/HasAspect | similar chemical properties
Facets:
value: to lanthanum
type: OTHER
value: to other lanthanides
type: OTHER
Source sentences:
text: Actinium has similar chemical properties to lanthanum and other lanthanides, and therefore these elements are difficult to separate when extracting from uranium ores.
text: Actinium has similar chemical properties to lanthanum and other lanthanides, and therefore these elements are difficult to separate when extracting from uranium ores.