Which of the transitions in the hydrogen atom energy-level diagram shown here requires the longest wavelength photon?
A) a
B) b
C) c
D) d

Name: Which of the transitions in the hydrogen atom energy-level diagram shown here requires the longest wavelength photon? A) a B) b C) c D) d
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Question

Which of the transitions in the hydrogen atom energy-level diagram shown here requires the longest wavelength photon? 
A) a 
B) b 
C) c 
D) d

Quizplus · Accepted Answer

The transition from energy level 3 to energy level 2 requires the longest wavelength photon because it has the lowest energy difference. The longer the wavelength of a photon, the lower its energy.

Which of the Transitions in the Hydrogen Atom Energy-Level Diagram