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AP Physics 2/Unit 15 – Modern Physics
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Hydrogen Atom Energy Level Transition

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The energy levels of a hydrogen atom are given by the equation En = -13.6 eV/n². What is the wavelength of the photon emitted when an electron transitions from the n=4 state to the n=2 state?

A

486 nm

B

122 nm

C

243 nm

D

972 nm

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