PHYSICS · Subjective · Fermi University Physics · Condensed Matter, Materials & Soft Matter · Crystal structure, bonding and diffraction · Crystal structure, bonding and diffraction
Condensed Matter Physics, Ch What holds a solid together, and where its atoms sit
Problem
A study note about aluminium, which is face-centred cubic with a=4.050A˚, reads: "The conventional cube holds four atoms, so the volume per atom is a3/4; since the cube edge is the shortest distance drawn on the diagram, the nearest-neighbour distance is just a." Which part of this is right and which is wrong? Give the correct volume per atom and the correct nearest-neighbour distance.