|  |  | 
 
 
| 5 | are those which give the electron an angular momentum w/c is a whole units of (h/2π) | 
 
 
| 6 | in the infrared region (nn to n = 3) | 
 
 
| 8 | answered all the questions about the photoelectric effect. | 
 
 
| 9 | the first stationary state, is the most stable state | 
 
 
| 10 | linear momentum x radius of rotation | 
 
 
| 13 | he started working out his own mechanical model of hydrogen atom. | 
 
 
| 14 | an instrument used to detect radiation outside the visible spectrum. | 
 
 
| 15 | observed that zinc plates became positively charged when struck by light. | 
 
 
| 17 | Each packet of energy is a quantum | 
 
 
| 18 | theoretical means of obtaining the wavelength of lines in the Balmer series. | 
 
 
| 19 | The smallest amount of something | 
 
 
| 20 | ultraviolet region (nn to n = 1) | 
 
 
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