Helium with one of its two electrons removed acts very much like hydrogen, and the Bohr
Chapter 34, Problem 61(choose chapter or problem)
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 and (b) the photon energy emitted in a transition from the to the state in this singly ionized helium. 6
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