Alkali, Electronic energy gap, Na-W

• H-Na-O-W
• Na-O-W
• H-Na-O-P-W
• H-K-Na-O-W
• Na-O-P-W
• values of electronic energy gap
• energy gap for indirect transition
• energy gap for direct transition
• transitional
• alkali
• chalcogen
• oxide
• triclinic
• monoclinic
• tetragonal
• orthorhombic
• cubic