Teacher: Given a scientific question, generate a correct answer to it.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Who proposed the theory of evolution by natural selection?
Solution: darwin
Reason: This is a direct fact that Charles Darwin proposed the theory of evolution.

Now, solve this instance: Which theory describes the benzene molecule and other planar aromatic hydrocarbon molecules as hexagonal rings of sp2-hybridized carbon atoms with the unhybridized p orbital of each carbon atom perpendicular to the plane of the ring?
Student:
valence bond theory