DALLY
发表于 2025-3-30 08:18:00
Symmetry,e, if we twirl the methane molecule by 120° about a C-H bond, it looks the same. It is often possible to derive, from the symmetry of the molecule, information about its quantum-mechanical properties, and this is the subject of this chapter.
Foam-Cells
发表于 2025-3-30 14:12:13
Time Dependence, we return to a topic mentioned at the very beginning of the book, when we discussed how spectroscopy, through Bohr’s postulates, led to recognition that quantum-mechanical systems can exist only in states with certain energies. Our aim now is to derive Bohr’s rules.
ANT
发表于 2025-3-30 19:47:27
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杂色
发表于 2025-3-31 00:15:09
Variation et optimisation de formes presence of several electrons will be considered in Chapter 7. When we consider many-electron atoms in Chapter 8, it will be important to be familiar with the properties of the energy levels and wave functions of the one-electron atom.
Organonitrile
发表于 2025-3-31 00:57:49
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Feckless
发表于 2025-3-31 07:55:33
Book 1977ate school in physical chemistry. He may take several more chemistry courses as an undergraduate and then seek a position in industry, or perhaps he will do graduate work in organic or inorganic chemistry. (Of course, one never stops hoping that, as a result of this first course, he will decide to l