Identify the element that corresponds to each of the simplified photoelectron spectral data given below. (Energy data taken from D. A. Shirley, R. L. Martin, S. P. Kowalczyk, F. R. McFeely, and L. Ley: “Core-electron binding energies of the first thirty elements,” Physical Review B, Vol. 15, pp. 544–552, 1977.) 

(a) There are peaks at energies of 64.8 and 5.4 eV, corresponding to 2 and 1 electrons, respectively.

(b) There are peaks at energies of 3614, 384, 301, 40.9, 24.7, and 4.34 eV, corresponding to 2, 2, 6, 2, 6, and 1 electrons, respectively.

(c) There are peaks at energies of 4494, 503, 404, 56.4, 33.6, 8.01, and 6.65 eV, corresponding to 2, 2, 6, 2, 6, 1, and 2 electrons, respectively.