AP Physics 2mediummcq1 pt

In the Bohr model of the hydrogen atom, which of the following transitions would emit a photon with the highest energy?

A.D) n=5 to n=4

B.A) n=2 to n=1

C.C) n=4 to n=3

D.B) n=3 to n=2

Explanation

Core Concept

The energy of the emitted photon is equal to the difference in energy between the two levels. In the Bohr model, the energy levels get closer together as n increases, so the largest energy difference occurs between the lowest levels. The transition from n=2 to n=1 has the greatest energy difference among the options given.

Correct Answer

BA) n=2 to n=1

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