Chapter 14, Problem 3STP

Interpretation Introduction

Interpretation: The lines representing a hydrogen bond needs to be explained.

Concept introduction: The hydrogen bond may be defined as a strong dipole-dipole forces of attraction that operates between a hydrogen atom that is covalently bonded to an atom of high electronegativity.

Answer to Problem 3STP

Option “A” is correct.

Explanation of Solution

The covalent bond between a hydrogen and an electronegative element is considerably polar because the electronegative atom attracts the bonding electron towards itself. The partial positive charge on hydrogen attracts the partial negative charge of a second electronegative atom forming what is called hydrogen bonding. In hydrogen bonding, dotted lines represent a force of attraction between two dipoles not a permanent bond between hydrogen of one molecule with oxygen of different molecule.

Conclusion

A solid line represents a permanent bond (either ionic or covalent) within the molecule Hence B, C, and D cannot be the answer.