Dipole- Dipole forces chem 2?

Question

2. Which one of the following substances will exhibit dipole-dipole intermolecular forces?

a. C2H4
b. SO2
c. CO2
d. F2
e. Ar

How can you tell? and whats the answer?

Answer 1

SO2 has a bent shape, and will have dipole-dipole forces. All the rest are symmetrical.