Unfortunately the treat- ment for atoms of more than one electron is at the level of freshman texts and hardly justifies the detailed effortof the preceding seotions. Chapter 22 continues the two-body problem for a, centrd field, namely the hydrogen atom. The three-dimensional box problem is included to illustrate degen- eracy and separability, and finally the two- body problem is set up with separation of varisbles and statement of the solution in terms of Legendre polynomials for the rigid rotor. The osoillator problem is set up and p a - tially solved with a. In Chapter 21 these methods are applied to the free particle, particle in a box, the uncertainty principle, and the harmonic oscillrttor. In Chapter 20 are pre- sented the postulates of quantum me- chanics, operator algebra, calculation of expectation values and eigenvalue prob- lems, perturbation theory, and a proof of the variation principle. more thor- ough introduction to quantum mechanical principles (Chapter 20), with applications to simple systems (Chapter 21), and a de- tailed discussion of the hydrogen atom (Chapter 22). In place of the rather primitive discus- sion of quantum phenomena found in the first edition are essentially three new chap- ters (20, 21, and 22) giving a. Many of the problem lists have been en- larged and improved.
It should be repeated that the treat- ment of thermodynamics and its applica- tions to chemical systems is excellently done, and the additions described here largely remedy deficiencies of the first edi- tion in quantum physical chemistry.
EDUC., 41, 577 (1964)l for comments which remain per- tinent for the bulk of this second edi- tion. The reader is referred to the first review [J. Exeeot for the addition of three new - chapters giving e.smtinlly nw and dc tailed discus9ims uf quxntum mwhnnivs and some applications to simple systems, and revisions and additions to chapters on covalent bonding and molecular spectros- oopy, this text is virtually the same as the first edition. Addison-Wesley Publishing Co., Reading, Mass., 1971. KIEFFER College of Woortar Wooster, Ohio Physical Chemistry, Second Edition Gilbert W.
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