An element crystalizes in a structure having F.C.C. unit cell of an edge \( 200 \mathrm{pm} \). ...

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An element crystalizes in a structure having F.C.C. unit cell of an edge \( 200 \mathrm{pm} \). Calculate the density if \( 200 \mathrm{gm} \) of it  contains atoms
a. \( 41.6 \mathrm{gm} / \mathrm{cm}^{3} \)
b. \( 42.6 \mathrm{gm} / \mathrm{cm}^{3} \)
c. \( 43.6 \mathrm{gm} / \mathrm{cm}^{3} \)
d. \( 44.6 \mathrm{gm} / \mathrm{cm}^{3} \)
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