19 окт 1913 г. - Bohr Planetary Model: Created by Niels Bohr; Depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus; Electrons orbit the nucleus in orbits that have a set size and energy; The energy of the orbit is related to its size. The lowest energy is found in the smallest orbit; Radiation is absorbed or emitted when an electron moves from one orbit to another
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