Describe how the Bohr model explains both of these observations.

Answer:

In the Bohr model, electrons can exist only in specific energy levels. When an atom absorbs energy, an electron jumps to a higher energy level. When it falls back to a lower level, it emits light. The wavelength of this light corresponds to the specific energy difference between the levels. Because every element has a unique set of energy levels, each element produces a unique emission spectrum.