Which of the following did the Bohr model of the atom successfully predict?

• A. The existence of neutrons in the nucleus
• B. The shapes of atomic orbitals for all elements
• C. The discrete energy levels and spectral lines of hydrogen
• D. The continuous emission spectrum of metals

Answer: (C)

Verified step by step guidance

1. Understand the historical context of the Bohr model: It was developed to explain the atomic structure and spectral lines, particularly for hydrogen.
2. Recall that the Bohr model introduced the idea that electrons orbit the nucleus in specific, quantized energy levels rather than any arbitrary orbit.
3. Recognize that the Bohr model successfully predicted the discrete energy levels of the hydrogen atom, which correspond to the observed spectral lines in hydrogen's emission spectrum.
4. Note that the Bohr model did not predict the existence of neutrons; neutrons were discovered later and are not part of Bohr's atomic structure.
5. Understand that the Bohr model does not describe the shapes of atomic orbitals (which come from quantum mechanics) nor does it explain the continuous emission spectra of metals.