Electro negativity measures the inclination of an atom to pull the electronic cloud in its direction during chemical bonding with another atom.
Pauling’s scale is a widely used method to order chemical elements according to their electro negativity. Nobel prize winner Linus Pauling developed this scale in 1932.
The values of electro negativity are not calculated, based on mathematical formula or a measurement. It is more like a pragmatic range.
Pauling gave the element with the highest possible electro negativity, fluorine, a value of 4,0. Francium, the element with the lowest possible electro negativity, was given a value of 0,7. All of the remaining elements are given a value of somewhere between these two extremes.
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