In order to determine the bond polarity between two atoms, their respective electronegativities must be determined. is the tendency of a bonded atom to attract bonded electrons to itself. The difference in , ##Delta”EN”##, can help predict the bond type.
In general, a ##Delta”EN”## of < 0.4 indicates a nonpolar bond, while a ##Delta”EN”## of 0.4 – 1.7 indicates a polar covalent bond, and a ##Delta”EN”## > 1.7 indicates an ionic bond. https://
The ##Delta”EN”## for the C-Cl bond = ##”|2.55 – 3.16| = |0.61|”##. (##Delta”EN”## is an absolute value; it is never negative.) A ##Delta”EN”## of 0.61 indicates that the C-Cl bond is polar covalent.
