問題詳情

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 energyrequired 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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