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Bohr's model explains:

1. the spectrum of hydrogen atom only
2. the spectrum of any atom or ion having one electron only
3. the spectrum of hydrogen molecule
4. the solar spectrum

Correct answer: the spectrum of any atom or ion having one electron only

Solution

Bohr’s model successfully describes hydrogen-like atoms and ions because each has only one electron, so the energy levels depend mainly on the nucleus-electron attraction. It does not handle multi-electron interactions, so it is not limited to hydrogen alone.

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