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Electronegativity of the Elements

Fluorine has the highest electronegativity (3.98) and caesium the lowest (0.79).

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1 H 2.202 He —3 Li 0.984 Be 1.575 B 2.046 C 2.557 N 3.048 O 3.449 F 3.9810 Ne —11 Na 0.9312 Mg 1.3113 Al 1.6114 Si 1.9015 P 2.1916 S 2.5817 Cl 3.1618 Ar —19 K 0.8220 Ca 1.0021 Sc 1.3622 Ti 1.5423 V 1.6324 Cr 1.6625 Mn 1.5526 Fe 1.8327 Co 1.8828 Ni 1.9129 Cu 1.9030 Zn 1.6531 Ga 1.8132 Ge 2.0133 As 2.1834 Se 2.5535 Br 2.9636 Kr 3.0037 Rb 0.8238 Sr 0.9539 Y 1.2240 Zr 1.3341 Nb 1.642 Mo 2.1643 Tc 1.944 Ru 2.245 Rh 2.2846 Pd 2.2047 Ag 1.9348 Cd 1.6949 In 1.7850 Sn 1.9651 Sb 2.0552 Te 2.153 I 2.6654 Xe 2.655 Cs 0.7956 Ba 0.8957 La 1.1058 Ce 1.1259 Pr 1.1360 Nd 1.1461 Pm —62 Sm 1.1763 Eu —64 Gd 1.2065 Tb —66 Dy 1.2267 Ho 1.2368 Er 1.2469 Tm 1.2570 Yb —71 Lu 1.2772 Hf 1.373 Ta 1.574 W 2.3675 Re 1.976 Os 2.277 Ir 2.2078 Pt 2.2879 Au 2.5480 Hg 2.0081 Tl 1.6282 Pb 1.8783 Bi 2.0284 Po 2.085 At —86 Rn —87 Fr —88 Ra 0.989 Ac 1.190 Th 1.391 Pa 1.592 U 1.3893 Np 1.3694 Pu 1.2895 Am —96 Cm —97 Bk —98 Cf —99 Es —100 Fm —101 Md —102 No —103 Lr —104 Rf —105 Db —106 Sg —107 Bh —108 Hs —109 Mt —110 Ds —111 Rg —112 Cn —113 Nh —114 Fl —115 Mc —116 Lv —117 Ts —118 Og —

Hydrogen

Nonmetals · Gas

Electronegativity 2.20Pauling

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Electronegativity, Pauling 0.79 3.98 no data

Rises left to right across a period and falls down a group. Fluorine has the highest value. All values as a list ↓

All elements by electronegativity

How strongly an atom pulls electrons towards itself in a chemical bond. On the Pauling scale it runs from 0.79 for caesium to 3.98 for fluorine.

Source: PubChem (NIH)

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  1. 1 Fluorine 3.98
  2. 2 Oxygen 3.44
  3. 3 Chlorine 3.16
  4. 4 Nitrogen 3.04
  5. 5 Krypton 3.00
  6. 6 Bromine 2.96
  7. 7 Iodine 2.66
  8. 8 Xenon 2.6
  9. 9 Sulfur 2.58
  10. 10 Carbon 2.55
  11. 11 Selenium 2.55
  12. 12 Gold 2.54
  13. 13 Tungsten 2.36
  14. 14 Rhodium 2.28
  15. 15 Platinum 2.28
  16. 16 Hydrogen 2.20
  17. 17 Ruthenium 2.2
  18. 18 Palladium 2.20
  19. 19 Osmium 2.2
  20. 20 Iridium 2.20
  21. 21 Phosphorus 2.19
  22. 22 Arsenic 2.18
  23. 23 Molybdenum 2.16
  24. 24 Tellurium 2.1
  25. 25 Antimony 2.05
  26. 26 Boron 2.04
  27. 27 Bismuth 2.02
  28. 28 Germanium 2.01
  29. 29 Mercury 2.00
  30. 30 Polonium 2.0
  31. 31 Tin 1.96
  32. 32 Silver 1.93
  33. 33 Nickel 1.91
  34. 34 Silicon 1.90
  35. 35 Copper 1.90
  36. 36 Technetium 1.9
  37. 37 Rhenium 1.9
  38. 38 Cobalt 1.88
  39. 39 Lead 1.87
  40. 40 Iron 1.83
  41. 41 Gallium 1.81
  42. 42 Indium 1.78
  43. 43 Cadmium 1.69
  44. 44 Chromium 1.66
  45. 45 Zinc 1.65
  46. 46 Vanadium 1.63
  47. 47 Thallium 1.62
  48. 48 Aluminium 1.61
  49. 49 Niobium 1.6
  50. 50 Beryllium 1.57
  51. 51 Manganese 1.55
  52. 52 Titanium 1.54
  53. 53 Tantalum 1.5
  54. 54 Protactinium 1.5
  55. 55 Uranium 1.38
  56. 56 Scandium 1.36
  57. 57 Neptunium 1.36
  58. 58 Zirconium 1.33
  59. 59 Magnesium 1.31
  60. 60 Hafnium 1.3
  61. 61 Thorium 1.3
  62. 62 Plutonium 1.28
  63. 63 Lutetium 1.27
  64. 64 Thulium 1.25
  65. 65 Erbium 1.24
  66. 66 Holmium 1.23
  67. 67 Yttrium 1.22
  68. 68 Dysprosium 1.22
  69. 69 Gadolinium 1.20
  70. 70 Samarium 1.17
  71. 71 Neodymium 1.14
  72. 72 Praseodymium 1.13
  73. 73 Cerium 1.12
  74. 74 Lanthanum 1.10
  75. 75 Actinium 1.1
  76. 76 Calcium 1.00
  77. 77 Lithium 0.98
  78. 78 Strontium 0.95
  79. 79 Sodium 0.93
  80. 80 Radium 0.9
  81. 81 Barium 0.89
  82. 82 Potassium 0.82
  83. 83 Rubidium 0.82
  84. 84 Caesium 0.79

No data

Helium (He), Neon (Ne), Argon (Ar), Promethium (Pm), Europium (Eu), Terbium (Tb), Ytterbium (Yb), Astatine (At), Radon (Rn), Francium (Fr), Americium (Am), Curium (Cm), Berkelium (Bk), Californium (Cf), Einsteinium (Es), Fermium (Fm), Mendelevium (Md), Nobelium (No), Lawrencium (Lr), Rutherfordium (Rf), Dubnium (Db), Seaborgium (Sg), Bohrium (Bh), Hassium (Hs), Meitnerium (Mt), Darmstadtium (Ds), Roentgenium (Rg), Copernicium (Cn), Nihonium (Nh), Flerovium (Fl), Moscovium (Mc), Livermorium (Lv), Tennessine (Ts), Oganesson (Og)