Question Detail

CHM 101 Chemical Bonding and Intermolecular Forces Objective Question

Question

What are hydrogen bonds?
Options
A Covalent bonds between hydrogen and oxygen
B Unusually strong dipole-dipole interactions experienced when hydrogen is bonded to nitrogen, oxygen, or fluorine
Correct Answer
C Weak attractions between all molecules regardless of composition
D Bonds formed by the transfer of electrons from hydrogen
Correct Answer

Option B is the correct answer.

Detailed Explanation

Hydrogen bonds are unusually strong dipole-dipole interactions that occur when hydrogen is covalently bonded to a highly electronegative atom (nitrogen, oxygen, or fluorine). The large electronegativity difference creates a strong partial positive charge on hydrogen that attracts strongly to lone pairs on neighboring molecules.

Hint

Hydrogen bonding is a special, stronger type of dipole-dipole interaction.

Question Info