(chatquestion)...DEmpies Copper has an FCC structure and the atomic radius is 1.278A. Calculate the density of copper crystal. Given atomic weight of copper as 63.5g and Avogadro's number of 6.02 X 10. Calculate the density of the atom. Calculate the number of atoms per unit call and predict the crystal structure of the metal which has a lattice parameter of 2.9A and density of 7.9g/cm'. The atomic weight is 55.85 and the Avogadro's constant is 6.023 X 1023

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