In the first chapter of part two we discuss the behavior of molecules in stars; in chapter two, we consider groups of elements and in chapter three, stellar chromospheres and coronas are discussed.

Chapter 1

In this chapter we provide a general description of the behavior of molecules in stars and in circumstellar envelopes. After a general introduction, the behavior of each molecule is described in detail, as we did for the elemental atoms. At the end of the chapter we provide a general summary of the behavior of molecules in stars, as we did for the individual atoms in stars.

Chapter 2

This chapter contains sections on the behavior of metals and on the behavior of rare earths.

Chapter 3

This chapter provides a summary of our knowledge on stellar chromospheres and coronas.

No detailed description of the content of chapters two and three is necessary.