阿摩線上測驗
81. What is the energy required to excite the electron in the hydrogen atom from the n = 1 level to the n = 2 level? (RH = 13.61 eV)
(A) 3.40 eV
(B) 6.81 eV
(C) 10.21 eV
(D) 13.61 eV
(E) None of the above.
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統計： A(2), B(0), C(29), D(1), E(0) #3101832
統計： A(2), B(0), C(29), D(1), E(0) #3101832
