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Equation 37-14b in the textbook gives the energy emitted by Hydrogen when electrons transition between states...

Equation 37-14b in the textbook gives the energy emitted by Hydrogen when electrons transition between states (En=-(13.6 eV) Z2/n2, n=1,2,3,...). When they do so, they absorb or emit a particle of light called a photon with energy E=hf. Here f is the frequency of light and h is a constant.

b) How much energy is emitted if an electron in the n=3 state transitions to the n=2 state?

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