1. In the text the solid state is contrasted with the gaseous state in terms of atomic (or molecular) interactions. How would you characterize the liquid state in this regard?
2. Explain the statement that the exclusion principle prevents solids from collapsing to zero volume.
3. Is there an analogy between the splitting of an energy level as two atoms are brought together to form a molecule and the splitting of the resonant frequencies as two resonant electrical circuits are coupled? Why?