試題詳解

20. Each of the longest wavelength of the spectral lines recorded for two electron transitions from n = 2 and n = 4 of hydrogen atoms is X and Y, respectively. What is the relationship between X and Y?
(A) X:Y = 11:34
(B) X:Y = 5:4
(C) X:Y= 1:4
(D) X:Y = 5:144
(E) X:Y=7:108