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A hydrogen atom, initially in the 3s state, is placed in a 0.800-T magnetic field that...

A hydrogen atom, initially in the 3s state, is placed in a 0.800-T magnetic field that points in the +z-direction. If the atom emits a photon, what are the possible photon energies? What are the initial and final m_l values for the transition that produces a photon with the shortest wavelength?

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