NaCl has a face-centered cubic structure. The | vedclass

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(B) The density $ho$ is given by the formula: $ho = \frac{Z 	imes M}{a^3 	imes N_A}$For $NaCl$ (fcc structure),the number of formula units per u

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$2.16$

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(B) The density $ho$ is given by the formula: $ho = \frac{Z 	imes M}{a^3 	imes N_A}$For $NaCl$ (fcc structure),the number of formula units per unit cell $Z = 4$.The molar mass $M = 58.5 \ g/mol$.The edge length $a = 0.564 \ nm = 0.564 	imes 10^{-7} \ cm = 5.64 	imes 10^{-8} \ cm$.Avogadro's number $N_A = 6.022 	imes 10^{23} \ mol^{-1}$.Substituting the values:$ho = \frac{4 	imes 58.5}{(5.64 	imes 10^{-8})^3 	imes 6.022 	imes 10^{23}}$$ho = \frac{234}{179.42 	imes 10^{-24} 	imes 6.022 	imes 10^{23}}$$ho = \frac{234}{108.04} \approx 2.16 \ g/cm^3$.

$NaCl$ has a face-centered cubic structure. The edge length of the unit cell is $0.564 \ nm$. What is the density of sodium chloride? $.............. \ g/cm^3$ [$1 \ nm = 10^{-7} \ cm$]

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