Answer these and explain your reasoning.
1. How much energy would it take to remove the electron fromunexcited hydrogen completely so that it is no longer bound to itsproton?
2. Suppose a hydrogen atom in the n=3 state emitted light bydecaying into the n=2 state. What color would that light be seenas? What about one starting at n=4 and ending in n=2? Can ahydrogen atom emit infrared light and end up in the n=2 state?
3.  If you can see light with wavelengths as short as385 nm, how many lines of the Balmer series might you be able tosee by eye with a bright light source and a spectrometer to make aspectrum?
4. Suppose that you could measure accurately the wavelengths ofthe first two lines of the Balmer series. How could you use thosemeasurements to predict the wavelength of the first line of thePaschen series?
This is the method by which we can find the energy levels ofatoms experimentally.
