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An element crystallises into a structure...

An element crystallises into a structure which may be described by a cubic type of unit cell having one atom on each corner of the cube and two atoms on one of its diagonals. If the volume of this unit cell is `24xx10^(-24)cm^(3)` and density of the element is `7.2g cm^(-3)`, calculate the number of atoms present in 200 g of the element.

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The correct Answer is:
`2.3148xx10^(24)` atoms
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