Number of molecules from the following which can exhibit hydrogen bonding is ____. (nearest integer)
HF,NH3
Answer: 5
Solution
Hydrogen bonding requires H bonded to N, O or F. From CH3OH,H2O,C2H6,C6H6, o-nitrophenol,HF,NH3, the species that can hydrogen bond are CH3OH, H2O, o-nitrophenol (−OH), HF and NH3 - 5 molecules (C2H6 and C6H6 cannot).