An element crystallizes in a structure having FCC unit cell of an e...

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An element crystallizes in a structure having FCC unit cell of an edge \( 200 \mathrm{pm} \). Calculate the density, if \( 200 \mathrm{~g} \) of this element contains \( 5 \quad 10^{24} \) atoms.
(A) \( 5 \mathrm{~m} / \mathrm{cm}^{3} \)
(B) \( 30 \mathrm{gm} / \mathrm{cm}^{3} \)
(C) \( 10 \mathrm{gm} / \mathrm{cm}^{3} \)
(D) \( 20 \mathrm{gm} / \mathrm{cm}^{3} \)
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