The emission spectrum of hydrogen shows discrete, bright, colored lines. Which characteristic of the Bohr model is best supported by this observation?

Hydrogen’s bright lines occur at specific wavelengths, so the atom emits only particular amounts of energy. In the Bohr model, electrons occupy specific allowed orbits with distinct energy levels; transitions between those levels produce the discrete spectral lines. Thus D, “Electrons cannot exist in locations other than in specific orbits,” is best supported. Energy is released when an electron moves to a lower, not a higher, energy level, so A is incorrect.

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