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At room temperature , Sodium crystallizes in a b.c.c lattice with edge length $a = 4.24A^{\large\circ}$ . Find the theoretical density of sodium.


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Total no. of atoms (Z) per unit cell = $8\times\large\frac{1}{8}+1$
Density $\rho = \large\frac{Z\times at.wt}{Av.No.\times a^3}$
$=1.0 gcm^{-3}$
Hence answer is (a)
answered Feb 25, 2014 by sharmaaparna1

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