Chalcogen, Charge-density wave state, Conductor, Monoclinic

• K-Mo-O
• Na-O-V
• Nb-Se
• Ba-Ir-O
• S-Ta
• electronic and electrical properties
• optical properties
• thermal and thermodynamic properties
• magnetic properties
• conductivity or resistivity
• chalcogen
• charge-density wave state
• conductor
• transitional
• metal