Which of the following postulates regarding the photoelectric effect is considered to be INCORRECT according to the quantum mechanical model we currently understand?
(A) Increasing the intensity of light does not change the energy per photon.
(B) The energy of a photon which ejects an electron from a metal surface must be equal to the binding energy (a.k.a. work function) of the electron plus the KE of the electron.
(C) Increasing the frequency of a photon can allow that lone photon to eject multiple electrons from a metal surface.
(D) Some electrons in a metal are easier (require less energy) to eject than others.
Please see question above and the teacher also supplied us with answers, so I know that answer is C. Now, I am trying to reason why C is an answer, and A seems to be reasonable from what I read in my book. D looks somewhat good even though books keep mum about it. But I am puzzled about answer B. I looked at every AP Chemistry source I could get, and I am not sure where I can find formula for energy of photon, which would be equal binding energy + KE of electron. I can imagine this might exist outside of AP Chemistry, but within a subject? I found the equation in Wikipedia, for example:
The energy of a photon causing the photoelectric effect is found through E = hf = KE + w, where h is Planck's constant, 6.626X10^(-34) J*s, f is the frequency of the electromagnetic wave, KE is the kinetic energy of the photoelectron and w is the work function for the metal.
Any help on this matter would be highly appreciated. Desirably, reference to AP Chem book with page number. Thank you so much in advance!