Cardona serra

• Al-Co-H-N-O
• H-K-O-P-W-Yb
• Gd-H-K-O-P-W-Y
• Er-H-K-O-P-W
• Dy-H-K-O-P-W
• structural properties
• transitional
• chalcogen
• alkali
• lanthanoid
• rare earth
• monoclinic
• triclinic