The Bohr model can be applied to singly ionized helium He1
Chapter , Problem 59(choose chapter or problem)
The Bohr model can be applied to singly ionized helium He1 (Z 5 2). Using this model, consider the series of lines that is produced when the electron makes a transition from higher energy levels into the nf 5 4 level. Some of the lines in this series lie in the visible region of the spectrum (380750 nm). What are the values of ni for the energy levels from which the electron makes the transitions corresponding to these lines?
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