1.

Metallic gold crystallises in fcc lattice. The length of the cubic unit cell is a = 4.07 Å (a) What is the closest distance between gold atoms. (b) How many "nearest neighbours" does each gold atom have at the distance calculated in (a). (c) What is the density of gold ? (d) Prove that the packing fraction of gold is 0.74.

Answer»


ANSWER :a 2.88 Å, B12, c19.4 g/cc


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