If an electron in a h atom relaxes from n 5 to n 2

This preview shows page 46 - 53 out of 99 pages.

2. If an electron in a H atom relaxes from n = 5 to n = 2 level, what is the wavelength (nm), frequency (Hz), and energy of light emitted? (Ans = 434.1 nm; freq = 6.911 x 10 14 Hz; E = 4.579 x 10 -19 J
Image of page 46

Subscribe to view the full document.

Answers 1. 2 2 f i 2 1 3 1 2 2 3 1 1 1 1 longest wavelength, lowest energy, i.e. between n 1 and n 2 1 1 1 1 1.097 10 1 8.228 10 1 2 4 1 121.5 8.228 10 f i R n n R nm nm nm nm l l l
Image of page 47
Question Calculate the wavelength associated with an e- of mass 9.109x10 -28 g traveling at 40.0% the speed of light. 1 J = 1 kg m 2 /s 2
Image of page 48

Subscribe to view the full document.