Based on electronegativities, which of the following would you expect to be most ionic?
Establish how to find the electronegative difference and determine which among the compounds is most ionic
Recall that dipole moment refers to the electronegativity difference in a bond/molecule. This means the molecule with the largest dipole moment has the largest electronegativity difference.
Recall that bonds can be classified acc. to their EN difference as:
(ΔEN) Bond Classification
Zero (0.0) Pure Covalent
Small (0.1 – 0.4) Nonpolar Covalent
Intermediate (0.4 – 1.7) Polar Covalent
Large (Greater than 1.7) Ionic
By calculating the electronegative difference, we can determine which bond/compound has the most ionic. The higher the EN difference, the more ionic it is