Features of the Lanthanide Higher Oxides

The striking characteristics of the lanthanide higher oxides are rooted in the electronic structure of Ce, Pr, and Tb atoms. The lanthanide elements located in the third group of the periodic table have a normal 3+ valence state and the normal oxides have the R2O3 formula. Due to the special electron configurations of Ce 

FIGURE 1 Sketch of the electronic density of states of CeOj and CeiO.  

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