You observe a x-ray line with a wavelength of 0.144 nm.
a. what is the energy of the x-ray photon, in ev?
b. determine which element (name and atomic number) produced the line.
c. if the element found in part (b) was modeled as a bohr atom (that is, with only one electron but the same atomic number), what
would be the energy of the transition of the transition from the n=2 to n=1 state? how does this value compare with your value in
part (a)?