[jubba]

(ii) The photoelectron spectrum of neon gas (with X-rays of wavelength 1 nm), on the other hand,
displays three peaks, at 372, 1191 and 1218 eV. To which orbital does each of these peaks
correspond? Explain your reasoning by sketching the radial probability densities of the
relevant orbitals on the same axes. Can you predict the ratio of the intensities (heights) of
these three peaks?

i can do the first two questions but how do you predict the ratio of the peaks?

[FeLiXe]

something about transition probability?

I don't know what the formula looks like though if the electron is emitted