The following peaks were observed in the photoelectron spectra for two elements (see Exercise 1.11). Identify the elements, write their electron configurations, and explain your reasoning:

Exercise 1.11

Photoelectron spectroscopy can be used to determine the energies of atomic orbitals by measuring the energies required to remove electrons from them. The following peaks were observed in the photoelectron spectra for two elements.

Identify the elements, write their electron configurations, and explain your reasoning:

75.7 eV (7.30 MJ· mol^-1) and 5.38 eV (0.519 MJ · mol^-1)

153 eV (14.8 MJ· mol^-1) and 9.33 eV (0.90 MJ· mol^-1)

Transcribed Image Text:

(a) 257 eV (24.8 MJ-mol-¹), 25.2 eV (2.43 MJ.mol-¹), and 8.29 eV (0.800 MJ.mol-¹) (b) 301 eV (29.0 MJ mol¹), 47.8 eV (4.61 MJ-mol-¹), and 11.4 eV (1.10 MJ.mol-¹)