He1 ions are observed in stellar atmospheres. Use the Bohr model to calculate the radius and the energy of He+ in the n =5 state. How much energy would be required to remove the electrons from 1 mol of He+ in this state? What frequency and wavelength of light would be emittedin a transition from the n = 5 to the n= 3 state of thision? Express all results in SI units.

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