Copper crystallises into a fcc lattice with edge length 3.61 × 10–8 cm. Show that the calculated density is in agreement with its measured value of 8.92 g cm–3.
prasanjeet kumar , 10 Years ago
Grade 8
1 Answers
Sunil Kumar FP
Last Activity: 10 Years ago
Given that Length of edge, a = 3.61x10–8 cm Atomic mass of cupper, M = 63.55 g/mol Avogadro constant, NA = 6.022x1023 per mol Number of atoms in unit cell of FCC, Z= 4 Use formula of density density=Z*M/a^3*Na =4*63.55/(3.61*10^-8)^3*6.023*10^23 =8.92 g/cm^3
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