Chalcogen, Monoclinic, Na-Np

• Na-Np-O
• H-Na-Np-O-Se
• H-Na-Np-O
• C-H-Na-Np-O
• H-Na-Np-O-S
• thermal and thermodynamic properties
• electronic and electrical properties
• structural properties
• Seebeck coefficient
• thermoelectric power
• radioactive
• actinoid
• alkali
• chalcogen