Which of the following statements about potassium chloride are correct? 1. In the solid state, it conducts electricity because its ions are free to move. 2. It has a high melting point because it has strong intermolecular forces. 3. Its structure is a giant lattice made up of alternating positive and negative ions. 4. It dissolves in water.
- A1 and 2
- B1 and 4
- C2 and 3
- D3 and 4