alleryBohr's first postulate: electrons revolve in ___ orbits around the nucleus.
ASpiral
BSpecific (quantized) energy orbits
CLinear
DRandom
Answer & Solution
Correct answer: B. Specific (quantized) energy orbits
Bohr postulated that electrons can only exist in specific 'stationary' orbits with quantized energies.
In these orbits they don't radiate energy, contrary to classical EM theory.
Resolves the atomic stability problem.
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