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Researched1927 · Machine Age (1900 – 1945)

Formal Sciences & Matter / Chemistry & Materials

Quantum Chemistry & Bonding

With quantum mechanics, Heitler and London (1927) and Pauling (1939) explain why atoms bond: chemistry becomes computable.

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Lewis proposed the electron-pair bond in 1916, Heitler and London computed the hydrogen molecule quantum-mechanically in 1927, and Pauling turned this into a teaching framework (Nobel Prize 1954). Quantum chemistry gave rise to density functional theory (Kohn, 1965) and computational chemistry, which designs molecules and materials on the computer.

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