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Per NCERT §2.4.2 (limitations), Bohr's model FAILED to explain which set of phenomena?
AConservation of charge
BThe stability of the hydrogen atom
CFine doublet structure of H spectrum, spectra of multi-electron atoms, Zeeman + Stark splitting, and bond formation
DThe existence of integer atomic numbers
Answer & Solution
Correct answer: C. Fine doublet structure of H spectrum, spectra of multi-electron atoms, Zeeman + Stark splitting, and bond formation
Per NCERT §2.4.2, Bohr could not explain fine doublets, multi-electron spectra, Zeeman (magnetic) + Stark (electric) splitting, or molecular bonding.
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