Which of the following describes the FCC structure?

The face-centered cubic (FCC) structure is characterized by atoms that are arranged at the corners of the cube as well as in the center of each face of the cube. This specific arrangement leads to a highly efficient packing of atoms, where each unit cell contains a total of four atoms. The corners contribute one-eighth of an atom each, totaling one atom from the corners, and the six faces each contribute half an atom, totaling three atoms from the faces, resulting in four atoms per unit cell.

This arrangement is significant in materials science and engineering because it impacts the properties of metals and alloys that adopt this crystal structure, such as ease of deformation and ductility. The face-centered cubic structure is seen in metals like aluminum, copper, and gold, which are known for their high levels of conductivity and malleability.