The varying electronegativity of atoms in a compound primarily informs us about B. Type of bond.
When two atoms in a compound have significantly different electronegativities, the atom with the higher electronegativity will attract the shared electrons more strongly, leading to the formation of polar covalent or ionic bonds, depending on the degree of difference in electronegativity. If the difference is large (typically above 1.7 on the Pauling scale), an ionic bond is likely to form, while a smaller difference usually results in a polar covalent bond. If the electronegativities are similar, a nonpolar covalent bond will form. Therefore, the interaction is most directly related to the types of bonds formed between the atoms.