Chalcogen, Non-disordered, Electronic and electrical properties, Trigonal, V-x polyhedra

• Se-V
• O-V
• Li-O-V
• K-O-V
• O-Tl-V
• conductivity or resistivity
• electronic energy gap
• values of electronic energy gap
• electrical conductivity
• effective mass
• chalcogen
• non-disordered
• transitional
• oxide
• metal