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Copper crystallize with fcc unit cell. …

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Copper crystallize with fcc unit cell. If the radius of copper atom is 127.8pm, calculate the density of copper metal (Atomic mass of Cu=63.55 u and NA=6.023*10 power 23 Mol)
  • 2 answers

Faisal Ahmad 7 years ago

Given, Z=4 (fcc) M=63.55 Na=6.022×10^23 r=127.8pm Where, a= 2√2r a= 2×1.414×127.8 a= 361.4pm a= 361.4×10^-10 a= 3.614×10^-8 So, Density= Z×M/a^3×Na Density, = 4×63.55/(3.614×10^-8)^3×6.022×10^23 =8.94 gm/cm^3

Faisal Ahmad 7 years ago

8.94 gm/cm^3
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