B-x polyhedra, Electronic and electrical properties, Trigonal

• B-C
• La-Mn-O-Sr
• B
• B-Li
• Ca-La-Mn-O
• conductivity or resistivity
• electrical conductivity
• effective mass
• electronic energy gap
• values of electronic energy gap
• disordered
• metalloid
• chalcogen
• non-disordered
• transitional