“…From the G(r) curves, the average interatomic distance for the first shell, r 1 and the second shell r 2 [18][19][20][21] are deduced and are equal to 0.24 and 0.386 nm, respectively. The values of r 1 and r 2 are in good agreement with the results obtained by Afify [1,14,19]. The average value of r 1 is corresponding to Se-Te bond length (which is 0.242 nm); this means that, the first shell has only Te atoms considering Se atoms as central atoms.…”