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Copper crystallises with face centred cubic unit cell. If the radius of copper atom is 127.8 pm, calculate the density of copper metal. (Atomic mass of Cu =63.55 u and Avogadro's number, $N_A = 6.02 × 10^{23 }mol^{−1}$)

1 Answer

Hence (A) is the correct answer.
answered Jun 2, 2014 by sreemathi.v

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