By X-ray studies, the packing of atoms in a crystal of gold is found to be in layers such that starting from any layer, every fourth layer is found to be exactly identical . The density of gold is found to be 19.4 g cm^(-3) and its atomic mass is 197 a.m.u. The coordination number of gold atom in the crystal is

By X-ray studies, the packing of atoms in a crystal of gold is found t

1.	By X-ray studies, the packing of atoms in a crystal of gold is found to be in layers such that starting from any layer, every fourth layer is found to be exactly identical . The density of gold is found to be 19.4 g cm^(-3) and its atomic mass is 197 a.m.u. The coordination number of gold atom in the crystal is
Answer» 4 6 8 12 Solution :The arrangement of layers is ABC ABC…. TYPE, i.e., it has CUBIC close PACKING arrangement . Hence, the COORDINATION number is 12.