Answer:
A4
B1
C3
D2
Explanation:
A4: dispersion forces occur in everything as it is variations in the electron cloud. Β They are very weak and are the only intermolecular force in a non-polar molecule such as CH4.
B1: Dipole Dipole forces occur between polar molecules. Β The polarity of the molecule creates a dipole which can attract each other. Β they are stronger then dispersion forces. Β CBr2Cl2 is a polar molecule.
C3: hydrogen bonding is a special type of dipole-dipole force and are pretty strong. Β They can only occur between H-N, H-O, and H-F bonds. NH3 has N-H bonds.
D2: ion dipole forces occur between a polar molecule and ions. Β They mainly occur when charged species (ions) are in a polar solvent but there are likely less common examples.
I hope this helps. Β Let me know if anything is unclear.
