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# An element crystallizes into a structure which may be described by a cubic type of unit cell having one atom in each corner of the cube and two atoms on one of its face diagonals. If the volume of this unit cell is $24 \times 10^{-24}cm^3$ and density of the element is $7.20gm/cm^3$, calculate no. of atoms present in 200gm of the element.

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## 1 Answer

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$2.3148\times 10^{24}$
Hence (D) is the correct answer.
answered Jun 2, 2014