Chemists have developed a new scale of atoms’ electronegativity, which, unlike the old one, correctly shows how different atoms behave at high pressures or the high energy of bonds between them.
The Nobel laureate Linus Pauling developed the previous scale. Its version, according to the authors, does not agree with either theoretical or experimental bond energies.
Electronegativity is the ability of atoms to attract electrons when they bond with other atoms. The electronegativity depends on the distance between the nucleus and the valence electrons and on how close the valence shell is to complete.
To our great surprise, we saw that we saw that Pauling’s scale is inconsistent with either theoretical or experimental bond energies. Moreover, it was known in the chemical
literature, but a satisfactory solution has not been proposed.
Artem Oganov, one of the authors of the work, professor of the Skolkovo Institute of Science and Technology
The authors note that Pauling’s table is correct at normal temperatures and pressures. However, in experiments at high pressures and in experiments with substances whose electronegativity of atoms is very different, Pauling’s theory’s predictions differ significantly from observational data.
Using new formulations, Russian scientists have prepared a new scale for the electronegativity of elements. According to the developers, it works equally well at low and high pressures. It correctly predicts the nature of both atoms’ interactions that are similar to each other and elements from opposite ends of this scale.