A larger electronegativity difference leads to a stronger and more polar ionic bond. For instance, the ionic bond in NaCl, where chlorine is more electronegative than sodium, is stronger and more polar than the bond in MgO.
Ionic bonds are inherently nonpolar, irrespective of the electronegativity difference.
Baroque art features strong contrasts, while Rococo art prefers more subtle transitions
Baroque art is generally larger in scale than Rococo art