Why did Bohr’s model fail for multi-electron atoms?
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A.
It assumed electrons are positively charged.
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B.
It did not consider electron-electron interactions.
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C.
It was based on classical physics only.
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D.
It ignored the nucleus of the atom.
Correct Answer:
B. It did not consider electron-electron interactions.
Explanation:
Bohr's atomic model was primarily designed for the hydrogen atom, which contains only one electron. While it successfully explained the spectral lines of hydrogen, it failed to account for multi-electron atoms because it did not include the effects of electron-electron interactions. In atoms with more than one electron, the electrostatic repulsion between the electrons significantly influences their energy levels and spatial distribution. Since Bohr’s theory treated electrons as independent entities orbiting the nucleus without considering these mutual repulsions, it could not accurately predict the energy states or complex spectra of larger atoms. Therefore, the model's inability to incorporate these internal interactions led to its replacement by quantum mechanics.
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