Hydrogen Bond Forces

• Hydrogen Bond Forces are a special type of dipole-dipole forces.
• Occurs between polar covalent compounds, particularly between compounds with H and compounds with N, O, or F.
• N, O, and F are the elements with the highest electronegativity.
• The molecules have lone pairs of electrons available for hydrogen bonding.
• Higher electronegativity differences between polar molecules ⟶ Stronger hydrogen bond force
• Greater hydrogen bonding sites ⟶ Stronger hydrogen bond force
• Larger molecular size of polar molecules ⟶ Stronger hydrogen bond force
• Examples of Hydrogen Bond Forces

  • H2O (Water)
  • HF (Hydrogen Fluoride)
  • C2H5OH (Ethanol)
  • CH3OH (Methanol)