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QJEEM07Ch5606: JEE Main 2007 Chemistry - Class 11 JEEM07Ch5606 Solution: Which of the following hydrogen bonds is the strongest?
Which of the following hydrogen bonds is the strongest?
Multiple Choice Options
- A O−H…….N
- B F−H…….F
- C O−H…….O
- D O−H…….F
Step-by-Step Verified Solution
Among F, O and N, F is most electronegative so F pulls bond pair of electron in F - H towards itself and develops highly positive charge on H atom.
This highly positive charged H atom creates stongest hydrogen bonding by taking lone pair of electron form electronegative atom F/N/O. Hence among the given options F – H ...... F is the strongest bond.
Note : F – H ...... N has strongest hydogen bonding among F – H ...... F, F – H ...... O and F – H ...... N because N is least electronegative among F, O and N and can easily donate lone pair of electron.
This highly positive charged H atom creates stongest hydrogen bonding by taking lone pair of electron form electronegative atom F/N/O. Hence among the given options F – H ...... F is the strongest bond.
Note : F – H ...... N has strongest hydogen bonding among F – H ...... F, F – H ...... O and F – H ...... N because N is least electronegative among F, O and N and can easily donate lone pair of electron.