Which evidence supports the idea that electrons move in definite pathways around the nucleus according to the Bohr Model?

• A. The periodic table arrangement
• B. The uncertainty principle
• C. Emission spectra of hydrogen
• D. The discovery of the neutron

Answer: (C)

Verified step by step guidance

1. Understand the Bohr Model: The Bohr Model suggests that electrons move in fixed orbits or pathways around the nucleus, with each orbit corresponding to a specific energy level.
2. Recognize the significance of emission spectra: When electrons in an atom absorb energy, they move to higher energy levels. When they return to lower energy levels, they emit light at specific wavelengths, creating an emission spectrum.
3. Connect emission spectra to the Bohr Model: The emission spectra of hydrogen show distinct lines, each corresponding to a specific energy transition of electrons between orbits. This supports the idea of electrons moving in definite pathways.
4. Differentiate from other concepts: The uncertainty principle, proposed by Heisenberg, suggests that the position and momentum of an electron cannot be simultaneously known with precision, which contrasts with the idea of definite pathways.
5. Conclude with evidence: The distinct lines in the emission spectra of hydrogen provide direct evidence for the quantized energy levels and definite pathways of electrons as proposed by the Bohr Model.