F-x polyhedra, Halogen, Mechanical properties, Trigonal

• F-La
• Ce-F
• F-La-Sr
• F-K-Sn
• F-H-Na
• elastic moduli
• isothermal bulk modulus
• elasticity
• temperature derivative of elastic stiffness coefficient
• compressibility
• halogen
• fluoride
• non-disordered
• transitional