Assertion: cerium | /r/DistinctFrom | other rare earths
Facets:
value: along with praseodymium
type: OTHER
Source sentences:
text: Along with praseodymium and terbium, cerium is different from the other rare earths in that it forms compounds in which its oxidation state is +4; it is the only rare earth that exhibits a +4 oxidation state in solution.