Coordination number of hydrogen in a hydrogen bond is

Options

A. `8`
B. `4`
C. `2`
D. `1`

Answer

C

Explanation

Hydrogen bond is written as
`A-H……..B` or `A-H…….A`
A and B represent O, N, or F. `A-H` is one molecule or part of a molecule and B is a part of another molecule. The dotted line represents the hydrogen bond. As we can see, H atom is sandwiched between two highly electronegative atoms. Thus, its largest coordination number is two.