Which statement is part of Bohr's atomic model?

• A. Electrons orbit the nucleus in fixed energy levels without radiating energy.
• B. Electrons are distributed randomly around the nucleus.
• C. The nucleus contains only protons.
• D. Electrons can exist between energy levels.

Answer: (A)

Verified step by step guidance

1. Understand that Bohr's atomic model was developed to explain the stability of atoms and the discrete lines observed in atomic spectra.
2. Recall that Bohr proposed electrons move in specific circular orbits around the nucleus, each orbit corresponding to a fixed energy level.
3. Recognize that according to Bohr, electrons do not radiate energy while they remain in these fixed orbits, which prevents the atom from collapsing.
4. Note that Bohr's model does not support electrons existing randomly or between energy levels; instead, electrons can only occupy certain allowed orbits.
5. Remember that Bohr's model includes both protons and neutrons in the nucleus, but the key feature is the quantized electron orbits without energy radiation.