Which compound forms linear polymer due to H-bond?
- H2O
- NH3
- HF
- HCl
Answer
(3) HF
Solution
Each HF molecule has only one H atom, so it can form only one H-bond with the next molecule. Hence HF molecules join end to end into zig-zag chains, (HF)n: H-F H-F H-F
H2O and NH3, by contrast, form three-dimensional H-bonded networks, and HCl does not form H-bonds.
Answer: (3)