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Quantum chemistry is an interdisciplinary field that combines principles from physics, chemistry, and mathematics to understand the behavior of molecules. The subject has gained significant attention in recent years due to its applications in various fields, including materials science, catalysis, and pharmaceuticals. A.K. Chandra's "Introductory Quantum Chemistry" is a popular textbook that provides a comprehensive introduction to the subject. If you're interested in accessing the PDF version
The Failure of Classical Mechanics: Understanding why we needed quantum theory. including materials science