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NCERT Class XI Chemistry Hydrogen Solutions

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Question : 14
Total: 36
Among NH3,H2O and HF, which would you expect to have highest magnitude of hydrogen bonding and why?
Solution:  
The strength of H-bonding depends upon the magnitude of the polarity of the bond. Since H–F bond has maximum polarity (F is the most electronegative element) hydrogen bonding is maximum in HF molecules.
- - -
δ+
H
 -
δ−
F
 - - -
δ+
H
 -
δ−
F
 ---
δ+
H
 -
δ−
F
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