Before revision: α-Aluminium has a regular cubic close packed structure, fcc, where each aluminium atom has 12 nearest neighbors , 6 in the same plane and 3 above and below and the coordination polyhedron is a cuboctahedron.
After revision: α-Aluminium has a regular cubic close packed structure, fcc, where each aluminium atom has 12 nearest neighbours , 6 in the same plane and 3 above and below and the coordination polyhedron is a cuboctahedron.