試題詳解

E_n(H)=-a/n² and E_n (He⁺) =- 4a/n²

Which of the following statements is(are) correct?

Ⅰ.For the transitions n₁→ n2 , the frequency is larger for H than for He⁺.

II. The first ionization energy of the H atom is smaller than the second ionization energy of the He atom. 

 III. The 1s orbital in He' is larger (in the sense that the probability density is shifted outward) than the is orbital in H.
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I, II, and III