4, Chalcogen, Pnictogen, Elastic moduli

• C-H-N-O
• O-P-Sr
• Br-C-H-N-Pb-S
• H-Li-N-O-S
• O-P-W
• isothermal bulk modulus
• pnictogen
• chalcogen
• non-disordered
• transitional
• monoclinic