Here's what that means:
* Cubic: The ions are arranged in a three-dimensional cube shape.
* Face-centered: Each face of the cube has an ion at its center.
Here's a breakdown of the pattern:
* Sodium (Na+) ions: Located at the corners of the cube and in the center of each face.
* Chloride (Cl-) ions: Located in the center of the cube's edges.
Key points to remember:
* The structure is very regular and repeating.
* Each sodium ion is surrounded by six chloride ions, and each chloride ion is surrounded by six sodium ions.
* This arrangement creates a strong ionic bond, making sodium chloride a very stable compound.