Cerium Cerium Cerium, Ce, is a metallic element, which is found in the lanthanide series of inner transition metals in Group IIIa of the periodic table. Occurrence Cerium, Ce, occurs in Allanite, Bastnasite, Cerite and Monazite. Fifteen radioisotopes have been identified. Cerium is a gray lustrous malleable metal.
Cerium is oxidised readily in air.
Cerium is attacked readily by acids and alkalis. Cerium has a variable electronic configuration, as its inner 4f level is of almost the same energy level as its outer 3d level. Reactions Uses Cerium is used in lighter flints, in the form of its oxide is used in the glass industry, and in the form of ceric sulphate is used in volumetric analysis. All Rights Reserved.