Section 25

The radius of each Bohr orbit is r = n2(0.052 9 nm) where n = 1, 2, 3, . . . . Calculate the electric potential energy of a hydrogen atom when the electron (a) is in the first allowed orbit, with n = 1, (b) is in the second allowed orbit, n = 2, and (c) has escaped from the atom, with r = ∞. Express your answers in electron volts. 56. ................
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