Select the correct answer. Which bond pair does not have a polar covalent bond? A. P-C B. O-H C. S-Cl D. H-Cl E Cl-Cl

The correct answer is E. $Cl-Cl$.<br /><br />In a polar covalent bond, the atoms involved have different electronegativities, resulting in an unequal sharing of electrons. This creates a dipole moment, where one atom is slightly more negative and the other is slightly more positive.<br /><br />In the case of $Cl-Cl$, both chlorine atoms have the same electronegativity, meaning they share the electrons equally. This results in a nonpolar covalent bond, where there is no dipole moment or unequal sharing of electrons.