阿摩線上測驗
76. The energy required to remove the electron from a hydrogen atom in its ground state is 2.178 × 10–18 J. What is the energy required to excite the electron in the He+ ion from the n = 1 level to the n = 2 level?
(A) 1.634 × 10–18 J
(B) 2.178 × 10–18 J
(C) 3.268 × 10–18 J
(D) 8.712 × 10–18 J
(E) None of these
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統計： A(19), B(5), C(4), D(6), E(39) #2356362
統計： A(19), B(5), C(4), D(6), E(39) #2356362
