The energy of a photon:
Ephoton = hc/λ = (6.62 × 10-34)(3.0 × 108)/(177 × 10-9)
For this question consider the Figure to the right shows an energy level diagram for a certain atom (not hydrogen). Several transitions are shown and are labelled by letters. Note: The diagram is not drawn to scale.
Which transition corresponds to the emission of a 177 nm photon?
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