Intermolecular Forces, Bonding and Naming Ionic Compounds

What explains the very high melting and boiling point of water

• Strong dipole-dipole bonds between water molecules

• Strong hydrogen bonds between water molecules

• Dispersion forces which are present in all molecules

Hydrogen bonding occurs when hydrogen is bonded to N, O, or F.  Which of the following has hydrogen bonding?

• CBr₄
• NO₂
• H₂S
• NH₃

Does H₂O have hydrogen bonding?

• yes
• no

Does HF have hydrogen bonding?

• yes
• no

Does HCl have hydrogen bonding?

• yes
• no

Does CH₄ have hydrogen bonding?

• yes
• no

Does NH₃ have hydrogen bonding?

• yes
• no

Rank the intermolecular forces, from weakest to strongest

• 1.) dispersion 2.) dipole-dipole 3.) hydrogen bonding

• 1.) hydrogen bonding 2.) dipole-dipole 3.) dispersion

• 1.) hydrogen bonding 2.) dispersion 3.) dipole-dipole

• 1.) dipole-dipole 2.) dispersion 3.) hydrogen bonding

• 1.) dipole-dipole 2.) hydrogen bonding 3.) dispersion

All molecules have dispersion forces between them, but dipole-dipole and hydrogen bonding are so much stronger that when they are present we can ignore dispersion forces. Which of these has ONLY dispersion forces?

• I₂

• NH₃

• OCl₂

• SH₂

Which substance would have the weakest intermolecular forces of attraction?

• CH₄

• NaCl

• H₂O

• MgF₂