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Bohr model
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Diagram of the Bohr atomic model for a nitrogen atom, showing a central nucleus with protons and neutrons, surrounded by two rings of orbiting electrons. Labels identify protons, neutrons, electrons, and electron orbits.
Niels Bohr's contribution to atomic theory explained
Diagram of the Bohr atomic model showing an electron moving in circular orbits with quantized energy levels around a central nucleus, alongside an energy level diagram illustrating electron transitions. Bohr model of a fluorine atom showing a central cluster of red and yellow spheres for protons and neutrons, with blue electrons orbiting in two rings. Diagram comparing the hydrogen atom's energy levels using Bohr's model, the Schrodinger equation, and the Dirac equation, with horizontal lines representing quantized binding energies and labels for each energy state.
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Niels Bohr's contribution to atomic theory explained
An overview of Niels Bohr's refinement of the Rutherford model.
Video: Encyclopædia Britannica, Inc.

Images

Bohr atomic model of a nitrogen atom
The diagram illustrates a nitrogen atom according to the Bohr model, with protons...
Encyclopædia Britannica, Inc.
Bohr model of the atom
In the Bohr model of the atom, electrons travel in defined circular orbits around...
Encyclopædia Britannica, Inc.
Fluorine atom
A Bohr model of Fluorine shows the atom's protons, neutrons, and electrons.
© Emilija Randjelovic—iStock/Getty Images
energy levels of the hydrogen atom
Energy levels of the hydrogen atom, according to Bohr's model and quantum mechanics...
Encyclopædia Britannica, Inc.
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