Chalcogen, H-N-O-Se, N-x polyhedra, Structural properties

• H-N-Na-O-Se
• H-K-Mo-N-O-Se-V
• H-N-O-P-Se
• C-H-N-O-Se-U
• chalcogen
• pnictogen
• non-disordered
• tetraoxoselenate
• monoclinic
• orthorhombic
• triclinic
• trigonal
• hexagonal