Practice!

Sample Problem

Using your knowledge of electronegativity, tell whether each of the following bonds will be ionic. (Write 1 for ionic, and 2 for not ionic)

a. H-H

b. O-Cl

c. Na-F

d. C-N

e. Cs-F

f. Zn-Cl

Solution

Bonds are ionic when there is a large difference in electronegativities of the bonded atoms. Only c, e, and f are ionic.