12. An electron in the hydrogen atom makes a transition from the n=5 level to the n=2 level. What is
問題詳情
12. An electron in the hydrogen atom makes a transition from the n=5 level to the n=2 level. What is the wavelength of the emittedphoton? （qe = –1.60×10−19 C, h=6.63×10−34 J·s） (A) 326 nm (B) 435 nm (C) 578 nm (D) 662 nm (E) 769 nm