Assertion: cerium | /r/HasProperty | transitional metal
Facets:
Source sentences:
text: A solution of a Cerium salt (Ammonium Cerium (IV) Sulphate) was mixed with an equal ammount of another solution, in which a physical change is noted, usually a colour change due to a precipitation of the Cerium insoluble compound or formation of a complex since Cerium is a transitional metal.