The electronegativity values of the elements are useful in predicting

More polar bonds result from differences in electronegativity between two atoms, which determines the bond energy of a molecule. The bond energy will increase as the ionic character does.
More electronegativity difference between two atoms, more ionic nature of the connection, and more polarity of the compound are all indicators of a molecule's polarity.
Oxide's chemical makeup: It is possible to forecast the type of oxides that an element will make by comparing its electronegativity to that of oxygen.