1H2He3Li4Be5B6C7N8O9F10Ne11Na12Mg13Al14Si15P16S17Cl18Ar19K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr37Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe55Cs56BaLa*Lanthanides57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu72Hf73Ta74W75Re76Os77Ir78Pt79Au80Hg81Tl82Pb83Bi84Po85At86Rn87Fr88RaAc*Actinides89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es100Fm101Md102No103Lr104Rf105Db106Sg107Bh108Hs109Mt110Ds111Rg112Cn113Nh114Fl115Mc116Lv117Ts118Og
HomeScalesAllen scale

Allen scale

Leland C. Allen calculates electronegativity from the energy state of the valence electrons, which allows spectroscopic determination.

ElementAllen scale
1HHydrogen2.3
3LiLithium0.912
4BeBeryllium1.576
5BBoron2.051
6CCarbon2.544
7NNitrogen3.066
8OOxygen3.61
9FFluorine4.193
10NeNeon4.787
11NaSodium0.869
12MgMagnesium1.293
13AlAluminum1.613
14SiSilicon1.916
15PPhosphorus2.253
16SSulfur2.589
17ClChlorine2.869
18ArArgon3.242
19KPotassium0.734
20CaCalcium1.034
31GaGallium1.756
32GeGermanium1.994
33AsArsenic2.211
34SeSelenium2.424
35BrBromine2.685
36KrKrypton2.966
37RbRubidium0.706
38SrStrontium0.963
49InIndium1.656
50SnTin1.824
51SbAntimony1.984
52TeTellurium2.158
53IIodine2.359
54XeXenon2.582