1H2He3Li4Be5B6C7N8O9F10Ne11Na12Mg13Al14Si15P16S17Cl18Ar19K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr37Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe55Cs56BaLa*Lanthanides57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu72Hf73Ta74W75Re76Os77Ir78Pt79Au80Hg81Tl82Pb83Bi84Po85At86Rn87Fr88RaAc*Actinides89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es100Fm101Md102No103Lr104Rf105Db106Sg107Bh108Hs109Mt110Ds111Rg112Cn113Nh114Fl115Mc116Lv117Ts118Og
Boyd-Edgecombe scale
The method of measurement developed by Richard H. Boyd and Geoffrey C. Edgecombe is based on the assumption that the electronegativity of an atom depends on its ability to attract electrons in a chemical bond. It takes into account ionization energies and electron affinities.
Element | Boyd-Edgecombe scale | ||
---|---|---|---|
3Li | Lithium | 1 | |
4Be | Beryllium | 1.44 | |
5B | Boron | 1.9 | |
6C | Carbon | 2.6 | |
7N | Nitrogen | 3.08 | |
8O | Oxygen | 3.62 | |
9F | Fluorine | 4 | |
11Na | Sodium | 1 | |
12Mg | Magnesium | 1.32 | |
13Al | Aluminum | 1.58 | |
14Si | Silicon | 1.87 | |
15P | Phosphorus | 2.17 | |
16S | Sulfur | 2.64 | |
17Cl | Chlorine | 3.05 | |
19K | Potassium | 0.99 | |
20Ca | Calcium | 1.34 | |
31Ga | Gallium | 1.75 | |
32Ge | Germanium | 1.99 | |
33As | Arsenic | 2.21 | |
34Se | Selenium | 2.46 | |
35Br | Bromine | 2.75 |