How many NaCl units are present in one unit c | vedclass

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(C) $NaCl$ crystallizes in a face-centered cubic $(FCC)$ lattice structure. In an $FCC$ unit cell,the number of $Na^+$ ions is $4$ (from $12$ edges $\

Vedclass · Accepted Answer

$4$

Vedclass · Answer

(C) $NaCl$ crystallizes in a face-centered cubic $(FCC)$ lattice structure. In an $FCC$ unit cell,the number of $Na^+$ ions is $4$ (from $12$ edges $	imes \frac{1}{4} + 1$ center $= 4$) and the number of $Cl^-$ ions is $4$ (from $8$ corners $	imes \frac{1}{8} + 6$ faces $	imes \frac{1}{2} = 4$). Therefore,the total number of $NaCl$ units per unit cell is $4$.

How many $NaCl$ units are present in one unit cell of $NaCl$?

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