Helium with one of its two electrons removed acts very much like hydrogen, and the Bohr model
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Helium with one of its two electrons removed acts very much like hydrogen, and the Bohr model successfully describes it. Find
(a) the radius of the ground-state electron orbit
(b) the photon energy emitted in a transition from the n = 2 to the n = 1 state in this singly ionized helium.
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