This reviewer’s last exposure to chemistry during his formal education was not since an advanced placement class in high school. It is a pleasure, therefore, to return to a text intended for honors undergraduates in order to begin to understand the field from ground up. Why? For it supplies historical perspective: after all, there is more to physics than ballistics and celestial mechanics. For the founders of modern empirical science, problems such as these are to be regarded as ideal paradigm cases by which to work out the principles so that one can then go on to apply them to the intriguing questions having to do with the inner structure of matter; see, for instance, Newton’s Opticks. Indeed, during the nineteenth century thermodynamics stood at the forefront of developments in physics, without which the elaboration of quantum mechanics would be inconceivable.
Modern chemistry has more than satisfactorily answered these perennial questions – maybe photosynthesis and the phenomena of life represent the last frontier of mystery? In any case, David W. Oxtoby and H.P. Gillis’ Principles of Modern Chemistry (now in its eighth edition) may be taken as a trustworthy guide that synthesizes all that chemists have learned over the past two centuries into a readily digestible format.
What is the level of this text? It can be hard to judge in retrospect, after graduate school in physics everything appears easy! Roughly appropriate for the sophomore year in college: one should enroll in first courses in quantum mechanics and statistical mechanics concurrently. The mathematics, however, remains at the freshman level, at most. But what counts are the ideas, which are not necessarily trivial for the beginning student to grasp.
Where Oxtoby excels is precisely in the explication of intricate concepts. There are many the beginning student of chemistry may be encountering for the first time, or at least for the first time at this level of sophistication: the operational meaning of an acid versus a base and how aqueous solutions behave under acid-base equilibria, the Aufbauprinzip for building up the electron shells of the elements and the rules for how it works, electronegativity, the various types of chemical bonds and how these come into existence, oxidative versus reducing reactions etc.
This reviewer particularly appreciates chapters five through eight on atomic and molecular structure as described by quantum mechanics and on chemical bonding in organic molecules and in transition metal compounds and coordination complexes – definitely more advanced than anything one will get in a high-school advanced placement class! The nature of the chemical bond in the hydrogen ion is described exhaustively in terms of its wavefunctions. Then the same for de-localized bonds in molecular orbital theory via the linear combination of atomic orbitals approximation. Again, Oxtoby shows both analytical formulae for and color figures of the molecular orbitals, along with correlation diagrams, for instance, for heteronuclear diatomic molecules and small polyatomic molecules such as carbon dioxide. The structure of transition metal compounds and coordination complexes is far from an elementary topic, as one has now to take what one has learned about molecular orbitals in the previous chapters and apply it to see how the molecular orbitals of the two constituents (a metal atom on the one hand, and an oxygen atom or unsaturated ligand on the other) come together to form the compound. But with the help of numerous level diagrams, Oxtoby makes such subjects as valence bond theory and ligand field theory clearly understood. A similar statement could be made about his treatment of acid-base equilibria, solubility and precipitation equilibria, electrochemistry and the interaction of molecules with light in later chapters. The closing sections on structure and bonds in solids, inorganic solid materials and polymeric materials and soft condensed matter are not nearly so mathematically challenging, perhaps, but nonetheless instructive and rewarding for anyone who has ever wondered how everyday objects are made up (fabrics, glasses, ceramics and so forth).
Recommended warmly for anyone who wants to know chemistry beyond the superficial level. After reading this book, one should be in a position to answer his child’s incessant queries as to what common things are and why they behave the way they do – possibly, to recall a few treasured memories, with even more insight than did this reviewer’s father, back in the day! For an informed explanation by someone who really understands the material from the ground up and can respond to questions is always much to be preferred to the slick canned presentations to which children will be exposed in grade school.