Which particles did Niels Bohr use in his experiments that led to the development of the Bohr model of the atom?

• A. Alpha particles
• B. Neutrons
• C. Electrons
• D. Protons

Answer: (C)

Verified step by step guidance

1. Recall that Niels Bohr developed his atomic model based on the behavior of electrons in atoms, particularly hydrogen.
2. Understand that Bohr's model focused on how electrons orbit the nucleus in quantized energy levels, which explained atomic emission spectra.
3. Recognize that Bohr did not use alpha particles or neutrons in his experiments; alpha particles were famously used by Rutherford in his gold foil experiment.
4. Note that protons were not the focus of Bohr's model; instead, he studied the electrons' energy transitions between orbits.
5. Therefore, the particles central to Bohr's experiments and model development were electrons.