alleryStart learning →Bohr's model improved on Rutherford's by:
ARestricting electron orbits to fixed energy levels
BRemoving the nucleus
CAdding neutrons in the standard view
DMaking electrons stationary
Answer & Solution
Correct answer: A. Restricting electron orbits to fixed energy levels
1. Rutherford's model could not explain why orbiting electrons did not crash into the nucleus.
2. Bohr proposed that electrons occupy only certain discrete circular orbits.
3. Each orbit has a fixed energy and is called a stationary state.
4. Electrons jump between orbits by absorbing or emitting photons.
5. So Bohr restricted electron orbits to fixed energy levels.
_Source: Selina Concise Chemistry ICSE Class 9, Ch 4 'Atomic Structure'_
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