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The Pauling scale gives the $\chi$ values of $\ce{N}$ and $\ce{Cl}$ to be $3.04$ and $3.16,$ respectively, but the Allen scale gives the $\chi$ values of $\ce{N}$ and $\ce{Cl}$ to be $3.066$ and $2.869,$ respectively.

Another point that should be made note of is that the most electronegative element as per Allen scale is $\ce{Ne}$. So, why is it accepted in the first place? And whose electronegativity is actually greater?

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  • $\begingroup$ It is best to consider them equally electronegative if in different compounds but consider N more electronegative if in the same compound. $\endgroup$ – Ruchi Mittal Mar 31 at 11:06
  • $\begingroup$ Is this just your opinion, or you can provide a reputable source or logical arguments to back up this claim? $\endgroup$ – andselisk Mar 31 at 11:23
  • $\begingroup$ Unanswered duplicate: Which is more electronegative: chlorine or nitrogen? $\endgroup$ – andselisk Mar 31 at 11:33
  • $\begingroup$ In NCL3 - reactions and uses is listed $\ce{NCl3 + 3 H2O -> NH3 + 3 HOCl}$ what gives a hint of higher N electronegativity, also mentioning moderate polarity. $\endgroup$ – Poutnik Mar 31 at 14:23
  • $\begingroup$ @Poutnik But doesn't cite source and that would be plenty wacky too get such strong oxidiser and moderate reducer out of such reaction,,, $\endgroup$ – Mithoron Apr 1 at 1:52
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Please take into account that there are a lot of different ways for calculating electronegativity.

1) Pauling obtains it by comparing the energies of dissociation of the three diatomic molecules AA, BB, and AB, stating that H electronegativity is 2.1 ! Unit : √energy

2) For Mulliken, it is the average value between the electronic affinity and the first ionization energy of the atom. Unit : energy

3) For Allred - Rochow, it is the force acting between a valence electron and the charge of the atom when the other valence electrons are removed. Unit : force

4) For Sanderson, it is the average electronic density of an atom divided by the average electronic density of the corresponding atom of inert gas.No unit.

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