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When did Niels Bohr publish his model of the atom?
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The Danish physicist Niels Bohr published his Bohr atomic model in 1913.12
He introduced this revolutionary description of the atom in a trilogy of articles featured in The Philosophical Magazine. By incorporating quantum theory, Bohr proposed that electrons could only occupy specific, discrete orbits rather than the arbitrary paths suggested by earlier classical models. This framework successfully explained the spectral line series of hydrogen by positing that electromagnetic radiation is emitted only when an electron transitions between these allowed energy states.12