1H2He3Li4Be5B6C7N8O9F10Ne11Na12Mg13Al14Si15P16S17Cl18Ar19K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr37Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe55Cs56BaLa*Lanthanides57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu72Hf73Ta74W75Re76Os77Ir78Pt79Au80Hg81Tl82Pb83Bi84Po85At86Rn87Fr88RaAc*Actinides89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es100Fm101Md102No103Lr104Rf105Db106Sg107Bh108Hs109Mt110Ds111Rg112Cn113Nh114Fl115Mc116Lv117Ts118Og
HomeScalesAllred-Rochow scale

Allred-Rochow scale

The scale according to the theory of Albert Allred and Eugene Rochow assumes that electronegativity is proportional to the electrostatic attraction exerted by the nuclear charge on the bonding electrons.

ElementAllred-Rochow scale
1HHydrogen2.2
2HeHelium5.5
3LiLithium0.97
4BeBeryllium1.47
5BBoron2.01
6CCarbon2.5
7NNitrogen3.07
8OOxygen3.5
9FFluorine4.1
10NeNeon4.84
11NaSodium1.01
12MgMagnesium1.23
13AlAluminum1.47
14SiSilicon1.74
15PPhosphorus2.06
16SSulfur2.44
17ClChlorine2.83
18ArArgon3.2
19KPotassium0.91
20CaCalcium1.04
21ScScandium1.2
22TiTitanium1.32
23VVanadium1.45
24CrChromium1.56
25MnManganese1.6
26FeIron1.64
27CoCobalt1.7
28NiNickel1.75
29CuCopper1.75
30ZnZinc1.66
31GaGallium1.82
32GeGermanium2.02
33AsArsenic2.2
34SeSelenium2.48
35BrBromine2.74
36KrKrypton2.94
37RbRubidium0.89
38SrStrontium0.99
39YYttrium1.11
40ZrZirconium1.22
41NbNiobium1.23
42MoMolybdenum1.3
43TcTechnetium1.36
44RuRuthenium1.42
45RhRhodium1.45
46PdPalladium1.35
47AgSilver1.42
48CdCadmium1.46
49InIndium1.49
50SnTin1.72
51SbAntimony1.82
52TeTellurium2.01
53IIodine2.21
54XeXenon2.4
55CsCaesium0.86
56BaBarium0.97
57LaLanthanum1.08
58CeCerium1.08
59PrPraseodymium1.07
60NdNeodymium1.07
61PmPromethium1.07
62SmSamarium1.07
63EuEuropium1.01
64GdGadolinium1.11
65TbTerbium1.1
66DyDysprosium1.1
67HoHolmium1.1
68ErErbium1.11
69TmThulium1.11
70YbYtterbium1.06
71LuLutetium1.14
72HfHafnium1.23
73TaTantalum1.33
74WTungsten1.4
75ReRhenium1.46
76OsOsmium1.52
77IrIridium1.55
78PtPlatinum1.44
79AuGold1.42
80HgMercury1.44
81TlThallium1.44
82PbLead1.55
83BiBismuth1.67
84PoPolonium1.76
85AtAstatine1.9
87FrFrancium0.86
88RaRadium0.97
89AcActinium1
90ThThorium1.11
91PaProtactinium1.14
92UUranium1.22
93NpNeptunium1.22
94PuPlutonium1.22
95AmAmericium1.2
96CmCurium1.2
97BkBerkelium1.2
98CfCalifornium1.2
99EsEinsteinium1.2
100FmFermium1.2
101MdMendelevium1.2
102NoNobelium1.2