KS8025 Copper
Overview
The unit cell is a cube having atoms in the 8 corners and in the centers of the 6 cube faces, hence the name �face-centered.� Each atom in the corners is shared by the 8 unit cells meeting in that corner, and each atom on a cube face is shared by the two unit cells having that face in common.
The face-centered structure is of the close-packed type with each atom surrounded by 12 equidistant neighbors. If the atomic radii are imagined to extend until the atoms are in contact with one another, the close-packing arrangement becomes apparent. This structure occurs in the metals: Cu, Ag, Au, Ca, Al, Ce-alpha, Th, Pb, Fe-gamma, Co, Ni, Rh, Pd, Ir, Pt.
The face-centered structure is of the close-packed type with each atom surrounded by 12 equidistant neighbors. If the atomic radii are imagined to extend until the atoms are in contact with one another, the close-packing arrangement becomes apparent. This structure occurs in the metals: Cu, Ag, Au, Ca, Al, Ce-alpha, Th, Pb, Fe-gamma, Co, Ni, Rh, Pd, Ir, Pt.
; "KS8025 Copper")