The PhotoElectron Spectrum (PES) of an element is given here. What is the wave function of the last electron of that element? Peak # of e 8 111 eV, 6e 6 0.92 eV, 4e 4 427 eV, 2e 278 eV, 2e- ta 14 eV, 2e- 2 1 시 ENERGY in eV a. Y = {3, 0, 1, +1/2} O b. W = {3, 1, 0, -1/2} c. Y = {3, 1, 0, +1/2} d. Y = {3, 0, 0, +1/2} = o e. Y = {3, 1, 1, -1/2} =