CK-12 Foundation
Ck 12: Chemistry: Ionic Bonding
[Free Registration/Login may be required to access all resource tools.] Covers how ions interact with one another in ionic bonds.
CK-12 Foundation
Ck 12: Physical Science: Ionic Bonding
[Free Registration/Login may be required to access all resource tools.] Ionic bonds: How and why they form, and the role of energy in their formation.