Carbonate, Chalcogen, Disordered, Values of electronic energy gap

• Ba-C-Ca-Cu-O
• C-H-K-O
• Al-C-H-Na-O-Si
• C-F-O-Pb-Rb
• C-H-Mg-O
• carbonate
• disordered
• chalcogen
• alkaline
• hexagonal
• tetragonal
• trigonal
• monoclinic
• orthorhombic