Which of the following has the strongest H - bond?

Options

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

Answer

C

Explanation

The strongest hydrogen bond is in hydrogen fluoride because the power of hydrogen bond `prop` electronegativity of atom and electronegativity `prop 1/(" atomic size")`
So fluorine has maximum electronegativity and minimum atomic size.