Bohr model Original Scenario-Based Download PDF

Questions

1. 1.

   During a deep-space expedition, researchers use an automated spectral analyzer based strictly on the Bohr atomic model to study atmospheric samples from an exoplanet. The analyzer accurately predicts the exact wavelengths of emission lines for atomic hydrogen and singly ionized helium, yet its predictions fail entirely when testing neutral helium gas. Which foundational limitation of the Bohr atomic model directly accounts for this discrepancy?

   • A) The model relies on wave-particle duality, which collapses when electron orbital radii shrink below the de Broglie wavelength.
   • B) The model accounts exclusively for relativistic speed corrections, which dominate only in single-electron systems.
   • C) The model considers only the electrostatic attraction between a single electron and the nucleus, neglecting electron-electron repulsions present in multi-electron systems.
   • D) The model applies only to atoms with completely filled electron shells, preventing valid calculations for neutral atoms.