What is a dipole moment?
Solution 22E Step 1 of 1 Dipole moment is a quantity that expresses the polarity of a covalent bond. When two different elements are linked by a polar covalent bond, we can expect there’s a dipole moment because of their different electronegativity. The dipole moment is a vector quantity that is directed from the less electronegative to the more electronegative atom involved in the considered bond. The magnitude of the dipole moment is given by the product of the charge (q) by the distance separating the charges. So = q *r In International System, distance is measured using metres (m); charge is measured using Coulombs ( C ), thus the dipole moment’s unit of measurements is C x m. Commonly this product is expressed using a the Debye (D) as unity of measurement. In this case we have to know that -30 1D= 3.34 x 10 C x m