Pauling's Electronegativity Values of the Elements
Name Electronegativity
Value
Name Electronegativity
Value
Name Electronegativity
Value
Actinium 1.1 Gold 2.5 Promethium
Aluminum 1.5 Hafnium 1.3 Protactinium 1.5
Americium 1.3 Holmium ------- Radium 0.9
Antimony 1.9 Hydrogen 2.1 Radon -------
Argon ------ Indium 1.7 Rhenium 1.9
Arsenic 2.0 Iodine 2.5 Rhodium 2.3
Astatine 2.2 Iridium 2.2 Rubidium 0.8
Barium 0.9 Iron 1.8 Ruthenium 2.2
Berkelium 1.3 Krypton 3.0 Samarium 1.2
Beryllium 1.5 Lanthanum 1.1 Scandium 1.4
Bismuth 1.9 Lawrencium
Selenium 2.4
Boron 2.0 Lead 1.8 Silicon 1.8
Bromine 2.8 Lithium 1.0 Silver 1.9
Cadmium 1.7 Lutetium 1.3 Sodium 0.9
Calcium 1.0 Magnesium 1.2 Strontium 1.0
Californium 1.3 Manganese 1.6 Sulphur 2.5
Carbon 2.5 Mendelevium 1.3 Tantalum 1.5
Cerium 1.1 Mercury 2.0 Technecium 1.9
Cesium 0.7 Molybdenum 2.3 Tellurium 2.1
Chlorine 3.0 Neon ------ Terbium
Chromium 1.7 Neptunium 1.3 Thallium 1.8
Cobalt 1.9 Nickel 1.9 Thorium 1.3
Copper 2.0 Niobium 1.6 Thulium 1.3
Curium 1.3 Nitrogen 3.0 Tin 1.8
Dysprosium 1.2 Nobelium 1.3 Titanium 1.5
Einsteinium 1.3 Osmium 2.2 Tungsten 2.4
Erbium 1.2 Oxygen 3.5 Uranium 1.7
Europium
Palladium 2.2 Vanadium 1.6
Fermium 1.3 Phosphorus 2.1 Xenon 2.6
Fluorine 4.0 Platinum 2.3 Ytterbium
Francium 0.7 Plutonium 1.3 Yttrium 1.2
Gadolinium 1.2 Polonium 2.0 Zinc 1.7
Gallium 1.6 Potassium 0.8 Zirconium 1.3
Germanium 1.8 Praseodymium 1.1



Percent Ionic Character of a Single Chemical Bond
Difference in electronegativity 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6
Percent ionic character         % 0.5   1   2   4   6   9 12 15 19 22 26 30 34 39 43 47

















Difference in electronegativity
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
Percent ionic character         %
51
55
59
63
67
70
74
77
79
82
84
88
89
91
92
95