Solution :
NOTE : Greater the difference between electronegativities of two covalently bonded atoms more will be strength of hydrogen bond.
∴ $$F - H......F$$ bond is strongest due to largest difference in electronegativity of atoms and smallest size of $$F$$ atom.
Releted MCQ Question on Inorganic Chemistry >> Chemical Bonding and Molecular Structure
Releted Question 1
The compound which contains both ionic and covalent bonds is