Answer:The electronegativity difference between F-Cl is 3.98 - 3.16 is 0.82. Therefore, in the F-I bond, the electronegativity difference is greatest.
Explanation:
In a diatomic molecule with two identical atoms, there is no difference in electronegativity, so the bond is nonpolar or pure covalent. When the electronegativity difference is very large, as is the case between metals and nonmetals, the bonding is characterized as ionic.Cesium fluoride has both the most electronegative atom and the least electronegative atom. Therefore, it must have the greatest difference in electronegativity between its atoms.
