The interatomic distance between the different atoms of (PEG)200, (PEG)<sub>300</sub> and (PEG)<sub>600</sub> at liquid state. LaridjaniMortéza LeboucherPierre 2014 <p>r<sub>m</sub>: The position of the peaks maxima in the total radial distribution function, <i>W(r)</i>, r<sub>m</sub>/r<sub>1</sub>,: geometrical factor (g.f).</p><p>The variation of g.f conserves the singularity of D.R.P. In this model; three atoms <i>(</i><b><i>trio</i></b>) are in hard contact, the forth one (<b><i>the apex</i></b>) is free to find its exact position. In these liquids the different values of (g.f) of single bond; C-C, C-O and double bond C = C in a pentagonal chain is shown.</p><p>The experiment indicates the fluctuation of the values of the geometrical factors between √3 = (1.7320) (singularity of regular tetrahedron) and √8<b>/</b>√3 = 1.6329 diameter (bi-pyramid configuration). The r<sub>3</sub>/r<sub>1</sub> shows the effect of medium range order on the local topology of the atomic network for each sample.</p><p>The interatomic distance between the different atoms of (PEG)200, (PEG)<sub>300</sub> and (PEG)<sub>600</sub> at liquid state.</p>