Question

the edge length of sodium chloride unit cell is 564pm. what is the density of sodium chloride in g/cm³? sodium chloride crystallised in fcc lattice​

Answer 1

Answer:

Explanation:

Theoretical density of crystal, ρ = $\frac{nM}{Noa3} g/cm^{3}$

$For NaCl, n=4, M=58.5 g, a=0.564*10^{-7}$

$therefore p = \frac{4*58.5}{6.002*23^{10}*(0.564)^{3}*10^{-21} }=2.16g/cm^{3}$

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