TG EAMCET 4 May 2025 Shift 1 Paper

The boiling point order is primarily determined by hydrogen bonding strength and network. H2O forms the most extensive hydrogen bond network due to two lone pairs.
HF possesses very strong individual hydrogen bonds, but a less extensive network.
NH3 exhibits weaker hydrogen bonding compared to H2O and HF .
PH3 lacks hydrogen bonding, having only weaker dipole-dipole forces.
Hence, the correct order is
H2O>HF>NH3>PH3