Chalcogen, Lanthanoid, Transitional, Er-W

• Er-O-W
• Cs-Er-O-W
• Er-H-Na-O-W
• Er-Gd-K-O-W
• Er-Li-O-W
• thermal and thermodynamic properties
• structural properties
• electronic and electrical properties
• thermal expansion
• linear thermal expansion coefficient
• transitional
• lanthanoid
• chalcogen
• rare earth
• monoclinic
• orthorhombic
• tetragonal
• triclinic
• cubic