Cell and atoms, Chalcogen, Non-disordered, Values of electronic energy gap

• C-H-N-O
• O-Si
• H-N-O-P
• C-Cu-H-N-O
• H-Na-O-P
• non-disordered
• chalcogen
• transitional
• quaternary
• monoclinic
• orthorhombic
• triclinic
• trigonal
• tetragonal