Work Step by Step
Lithium has an electronegativity value of 1.1 whereas fluorine has an electronegativity value of 4.0. The difference in electronegativity between the two elements is 2.9. If the difference in electronegativities is greater than 2.0, then the bond is ionic. The degree of charge separation between these two elements can then be represented by the colors violet and red, which means that the electrons are totally transferred from one atom to the other. Additionally, anions are usually larger than cations; therefore, fluorine, the anion, will be depicted by the bigger bubble. Thus, the correct representation of the bond between these two elements is (b).