Consider the compound Al(OH)_3. What type of solid does it form?

• A. Molecule
• B. Glass
• C. Crystal lattice
• D. Metal

Answer: (C)

Verified step by step guidance

1. Identify the nature of the compound Al(OH)\_3 by examining its components: aluminum (Al) is a metal and hydroxide (OH) is a polyatomic ion.
2. Recognize that Al(OH)\_3 is an ionic compound formed by the metal cation Al\^{3+} and the polyatomic anion OH\^{-}.
3. Recall that ionic compounds typically form crystalline solids due to the strong electrostatic forces between the oppositely charged ions.
4. Understand that a crystal lattice is a highly ordered, repeating three-dimensional arrangement of ions in an ionic solid.
5. Conclude that Al(OH)\_3 forms a crystal lattice solid because it is an ionic compound with a regular, repeating ionic structure.