chemistry·NCERT Class 11·States of Matter
Intermolecular Forces & H-bonding
Medium+70 XP
Why does water boil at 100°C but H₂S at −60°C? Both are Group 16 hydrides — but only water forms hydrogen bonds. Visualise the H-bond network in 3D.
›Intermolecular forces (weakest→strongest): London/dispersion < dipole-dipole < H-bonding.
›H-bonding: only N–H…N/O, O–H…N/O, F–H…F. Not C–H.