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GK QUESTION#3144

According to Bohr's model, what is the significance of an electron transition from a higher energy orbit to a lower energy orbit?

  1. AThe electron's angular momentum becomes quantized.
  2. BThe electron gains energy.
  3. CA photon of energy equal to the energy difference between the orbits is absorbed.
  4. DA photon of energy equal to the energy difference between the orbits is emitted.Correct answer
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Answer

D. A photon of energy equal to the energy difference between the orbits is emitted.

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Explanation

In the Bohr model, a transition to a lower energy level releases a photon. Its energy is the difference between the initial and final levels: hν = Eᵢ − E_f. Absorption corresponds to an upward transition.

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