Be-K, Structural properties

• Al-B-Be-Cs-K-O-Rb
• B-Be-F-K-O
• Be-F-K
• Be-K-O-Si
• Al-Be-Ca-H-K-O-Si
• alkaline
• alkali
• chalcogen
• metalloid
• cubic
• hexagonal
• monoclinic
• orthorhombic
• trigonal