Rare earth, Valence transfer

• Ba-Cu-O-Y
• Al-Yb
• Se-Tm
• Ce-Pd
• Ce-Ni
• effective charge
• values of valence or charge transfer
• electron density maps
• rare earth
• lanthanoid
• transitional
• non-disordered
• chalcogen
• cubic
• tetragonal
• orthorhombic
• hexagonal
• trigonal