CK-12-Chemistry Intermediate

http://www.ck12.org Chapter 8. Ionic and Metallic Bonding

FIGURE 8.9

(A) Distilled water does not conduct elec-

tricity. (B) A solid ionic compound is

also not very conductive. (C) A solution

of an ionic compound dissolved in water

conducts electricity well.

FIGURE 8.10

In an ionic solution, the A+ions migrate

toward the negative electrode, while the

B−ions migrate toward the positive elec-

trode.

to one another. The coordination number of an ion is the number of nearest neighbors that it has within the

crystal lattice.

• Ionic compounds are hard and have high melting points. They are difficult to break but are also very brittle.
  They conduct electricity only when melted or dissolved in water to form a solution.

Lesson Review Questions

Reviewing Concepts

1. Draw an electron dot diagrams for the following atoms and ions.