Polar Covalent Bonds:Electronegativity Polar covalent bonds -A covalent bond in which the electron distribution between atoms is unsymmetrical Ionic character 8+ Covalent bond Polar covalent bond Ionic bond Cengage Leaming.Al Rights Reserved. Bond polarity is due to difference in electronegativity (EN)  Polar covalent bonds  A covalent bond in which the electron distribution between atoms is unsymmetrical  Bond polarity is due to difference in electronegativity (EN) Polar Covalent Bonds: Electronegativity