When a chlorine atom covalently bonds to another chlorine atom, the shared electron pair is shared equally. To judge the relative polarity of a covalent bond, chemists use electronegativity, which is a relative measure of how strongly an atom attracts electrons when it forms a covalent bond. Supporting information: Electronegativity of … What does the electronegativity of an atom indicate? If the difference in electronegativities is large enough (generally greater than about 1.8), the resulting compound is considered ionic rather than covalent. The other atom deficient in electrons acquires a partial positive It is NOT completely successful. The difference is zero, so the bond is nonpolar. 1. Polar Covalent Bonds. has lost control of its electron some of the time (H +). on the right. Although there are no hard and fast rules, the general rule is if the difference in electronegativities is less than about 0.4, the bond is considered nonpolar; if the difference is greater than 0.4, the bond is considered polar. This is a nonpolar covalent bond. That’s a quick definition of nonpolar covalent bonds, but a closer examination of what it means for a … In summary, a polar bond results when transfer of one or more electrons from a metal onto a non-metal. The formation of an Ionic bond is the result of the