Which of the following hydrogen bonds is the strongest ?

Options

A. `O-H- - -F`
B. `O-H- - - H`
C. `F-H- - - F`
D. `O-H - - - O`

Answer

C

Explanation

NOTE: Greater the difference between electronegativity of bonded atoms, stronger will be bond. Since F is most electronegative hence `F-H ..... F` is the strongest bond.